Question

Check weather the following number are in proportion or not
A.4,12,21,63

Answer 1

Step-by-step explanation:

i)4,12,21,63

product of extreem term =product of middle term

4x63=252

12×21=252

yes ,4,12,21,63 are in proportional

ii)5,20,72,30

5x30=150

20×72=1440

here,product of extremely term is not equal to product of middle term.So,they are not proportion tional

Answer 2

Answer:

yes ,4,12,21,63 are in proportional

Step-by-step explanation:

i)4,12,21,63

product of extreem term =product of middle term

4×63=252

12×21=252

yes ,4,12,21,63 are in proportional