Question

Are the following numbers in proportion?

$30,40,45,60$

Answer 1

Checking whether the numbers are in proportion or not :

The given numbers are $30,40,45,60$

We know that,

Four terms are said to be an in proportion if

Product of extreme $=$ Product of means

Product of extremes $=30\times 60$

$=1800$

Product of means $=40\times 45$

$=1800$

Since $30\times 60=40\times 45$

Hence, the given numbers are in proportion