The phrase "appropriate to justify" is correct and usable in written English.
It can be used when discussing whether a certain action, decision, or reasoning is suitable or acceptable in order to provide justification for something.
Example: "In this case, it is appropriate to justify the expenses incurred during the project to ensure transparency."
Alternatives: "suitable to explain" or "valid to support".
But also, Dr. King's legacy and what he stood for has been watered down, oversimplified, and appropriated to justify the very things he fought against.
Such a process, legal analysts said, presumably would help the government defeat arguments that the president had not made the appropriate findings to justify his order.
Rawls contends that, since his aim is to discover a conception of justice appropriate for a democratic society that is justifiable to its free and equal citizens and which all can endorse and accept, the appropriate way to justify this conception is by (imagining) an agreement among free and equal moral persons themselves.
And secondly, in the wake of these two conflicts, what is the appropriate threat level to justify action in, perhaps, other situations going forward? A. -- Yeah.
The fact that the appellate court might reasonably have concluded that a different sentence was appropriate is insufficient to justify reversal of the district court.
After consulting with the general in charge of the state's National Guard, Sandoval decided there was no "appropriate mission definition" to justify sending troops, according to his spokeswoman, Mary-Sarah Kinner. Mary-Sarah Kinner
While I'm constantly wishing there was more outrage in our movement, it needs to be appropriate to and justified by the situation.
Mr. Mugabe exulted in defying external pressures, appropriated antiterrorist language to justify violent repression of his opponents and pushed through parliament three extraordinary measures: a security act, an electoral code and, most recently, a media bill.
At the other end of the spectrum, "a valid reason, such as a missing witness, should serve to justify appropriate delay". Ibid.
