Question

(\frac{x}{18} = \frac{0.25}{1})

Explanation:

Step1: Cross - multiply the equation

Given the equation $\frac{x}{18}=\frac{0.25}{1}$, by the cross - multiplication property of proportions (if $\frac{a}{b}=\frac{c}{d}$, then $a\times d = b\times c$), we have $x\times1=18\times0.25$.

Step2: Calculate the right - hand side

Calculate $18\times0.25$. We know that $0.25=\frac{1}{4}$, so $18\times\frac{1}{4}=\frac{18}{4} = 4.5$. Since $x\times1=x$, we get $x = 4.5$.

Answer:

$x = 4.5$