This equation does not give us the value of the unknown factor but gives us a ratio between two unknowns.
Only when we have admitted the conception of the infinitely small, and the resulting geometrical progression with a common ratio of one tenth, and have found the sum of this progression to infinity, do we reach a solution of the problem.
There are no more uses of "ratio" in the book.
Show samples from other sources
The ratio of the 2nd to 4th finger length predicts spatial ability in men.
Their profitablity ratios are good, but their liquidity ratios are of concern.