"how satisfactory" is correct and usable in written English.
You can use it when you want to express satisfaction with something or to express something as being satisfactory. For example: "I am very pleased with the results; how satisfactory!".
"We've never shied away from that, and it's just a question of what we can afford and just how satisfactory that is to the player group".
It's perfectly possible to sit and imagine a wise chum, or a dear pal, or Antonin Artaud, or Captain Ahab, or Captain Scarlet, or Captain Haddock – whoever works for you – and to ask ourselves how satisfactory they would find our efforts.
It is not clear, however, how satisfactory such a theory is.
How satisfactory is the neutral monist way of saving realism from the problems posed by nonveridical experience?
This would deepen our understanding of how, where and by whom such interactions are initiated and how satisfactory they are for HCP and family members.
For the question of how satisfactory is this service as a PPI article search tool, the biologists responded with a rating of 4.4 on average on a 1 (bad) to 5 (good) scale.
It is unclear whether unifying the phenomena is an explanatory virtue and how a satisfactory notion of unification should be understood.
On the contrary, there was a general pattern of how the satisfactory and trustful doctor-patient relationship from the patients' point of view could be created, maintained or destroyed.
This study also investigated how a satisfactory measurement precision was reached on each dimension and whether the improvement in precision proceeded in a monotone way as would be the case for a unidimensional CAT.
How much more satisfactory to change the concept of marriage altogether, dispense with the absurd all or nothing idea of life time commitment, and get married for the day!
Having learnt how to make satisfactory images with one camera they each remained with that camera, accepting its limitations as imposing a necessary discipline upon their image-making, as well as allowing them to concentrate on the realisation of the subject.
