The phrase "a specific ratio of" is correct and usable in written English.
It can be used when discussing proportions or comparisons between quantities in various contexts, such as cooking, science, or finance.
Example: "To create the perfect salad dressing, you need to mix a specific ratio of oil to vinegar."
Alternatives: "a precise proportion of" or "a defined ratio of".
There must be a formula for this: a specific ratio of troubling current events, personal experience and artistic identity, combined with a potential for multiple interpretations.
After removing T cells from the patients, he said, scientists remove nonessential immune cells, resulting in a specific ratio of engineered helper and killer T cells.
The High Pay Centre is setting up a "40 times" club, referring to a specific ratio of executive pay to the wider workforce, of which only a handful of FTSE 100 companies would be members.
In doing so, Qatar dropped its earlier reference to a specific ratio of 3.25, which analysts say they believe indicates a willingness to negotiate with Glencore.
Rose follows a specific ratio of high/low (three parts Balmain to two parts American Apparel) but her overall look is more accessible than that (blink and it's the sort of thing you can see in-store at Topshop this season).
According to microstructural and X-ray diffraction (XRD) analysis, as-formed TiO2 nanotubes are amorphous but by subjecting to thermal treatments the structure becomes crystalline with a specific ratio of the crystalline phases of TiO2, anatase and rutile.
He is delighted by the "richness of these conversations" and credits a specific ratio: the group consists of approximately 25 non-musicians and five musicians; everyone is asked to contribute a bottle of wine and meaningful questions, nothing more.
They manipulated the model to see if it could produce the same branching patterns, and it soon identified a specific ratio between the forces of incision and soil creep that acted like a tipping point or switch.
The products of incomplete combustion of natural gas are mixed with water vapor in a specific ratio in the first zone of reactor's volume.
Blood-based dosimetry relies on the assumption of a specific ratio between the activity concentrations in blood and bone marrow.
Money is fungible, and the specific ratio of financial assets and remaining home equity is not important.
