(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

The following numbers, K + 3, K + 2, 3K – 7 and 2K – 3 are in proportion. Find k. 

Find the value of the unknown in the following proportion :

5 : 12 :: 15 : x 

Find the value of the unknown in the following proportion :

3 : 4 : : p : 12

Find the value of the unknown in the following proportion :

`1/2 : "m" :: 14/9 : 4/3`

Find the value of the unknown in the following proportion :

c

Find the fourth proportion to the following: 

3,5 and 15

Find the fourth proportion to the following: 

0.7, 4.9 and 1.6 

Find the fourth proportion to the following: 

(p²q - qr² ), (pqr - pr² ) and (pq² - pr²)

Find the fourth proportion to the following : 

(x² - y²),(x³ + y³)anc(x³ - xy² + x²y- y³) 

Find the third proportion to the following :

3 and 15 

Find the third proportion to the following :

16x² and 24x  

Find the third proportion to the following :

(x - y) and m (x - y)  

Find the third proportion to the following :

`9/25` and `18/25`

Find the mean proportion of the following :

24 and 6 

Find the mean proportion of the following :

0.09 and 0.25 

Find the mean proportion of the following :

ab³ and a³b 

Find the mean proportion of the following :

`28/3` and `175/27`

If x, 12 and 16 are in continued proportion! find x. 

If `1/12` , x and `1/75` are in continued proportion , find x.

If y is the mean proportional between x and z, show that :

xyz (x+y+z)³ =(xy+yz+xz)³