st: Fw: ok to include the denominator of ratio dep var as an independent var too?

[=?UTF-8?Q?Steven_Gorl=C3=A9?= <steven.gorle@telenet.be>]

Dear,

From an epistemological point of view, you are mixing up the explanandum
with the explanans, I would try to avoid that.
You are trying to explain the variation of y/x - which is partly dependent
on x, as the response variable is a ratio of x -  with the variation of x.