If $$\frac{X}{3} = \frac{Y}{5} = \frac{Z}{9}$$, then what is the ratio of $$X : Y : Z$$ ?
Given,$$\dfrac{X}{3} = \dfrac{Y}{5} = \dfrac{Z}{9}$$
$$\dfrac{X}{3} = \dfrac{Y}{5}$$
=> $$\dfrac{X}{Y} = \dfrac{3}{5}$$
$$\dfrac{Y}{5} = \dfrac{Z}{9}$$
=> $$\dfrac{Y}{Z} = \dfrac{5}{9}$$
Therefore, X : Y : Z = 3 : 5 : 9
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