Question

Complete this proportion:$27$ is to $3$ as $x$ is to $5$

Answer 1

Let the missing number be $x$

$27:3::x:5$

Using product of extremes$=$Product of means

$\Rightarrow 27\times 5=3\times x$

$\Rightarrow x=\frac{27\times 5}{3}=9\times 5=45$