Question

Are the four number 40,50,100and 125in proportion

Answer 1

Answer:

yes they are in proportion as their common ratio is 4:5

Answer 2

Answer:

The number are not in proportion.

To find:

Whether 40, 50, 100 and 125 are in proportional.

Solution:

Here, a = 40, a2 = 50, a3 = 100 and a4 = 125

If they are in proportional then

$\sf{\dfrac{a_{n+1}}{a_{n}}}$, should be constant.

For a and a2,

50/40 = 5 : 4...(1)

For a2 and a3,

100/50 = 1 : 2...(2)

From (1) and (2)

Ratio is not constant.

Hence

• The numbers are not in proportion.

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