Question

state whether the following ratios are proportional or not a)20:45 and 4:9​

Answer 1

Answer:

yes

Step-by-step explanation:

as 45into4is equal to 20 into 9

Answer 2

Given,

• 20:45 and 4:9 are given.

To find,

• State whether the following ratios are proportional or not

Solution,

The ratio 20:45 and 4:9 is proportional.

We can simply find the ratios are proportional or not by using the concepts of proportionality.

Let us assume 20:45:: 4:9

then, 20/45 = 4/9

Cross multiplying each other, we get

       20*9 = 45*4

         180 = 180

⇒ The given ratios are proportional.

Hence, the ratio 20:45 and 4:9 is proportional.