The fourth proportional to $4, 5$ and $10$ is  .

Express the ratio in the simplest form: $10:20$

Express the ratio in the simplest form :

$35 : 42$

Express the ratio in the simplest form

$\frac{1}{2}:\frac{1}{3}$

Express the ratio in the simplest form :

$2\frac{1}{2} : 3\frac{1}{4}$

A bottle had half litre of honey. Another bottle had $300$ ml of honey. Find the ratio of the contents in the two bottles.

A box had $2$ kg of sweets while another box had $900$ gm of sweets. Find the ratio of sweets in the boxes

In a library there are $6000$ books. Out of this $4500$ were in Hindi while the rest were in English. Find the ratio of

Hindi books : total books

In a library there are $6000$ books. Out of this $4500$ were in Hindi while the rest were in English. Find the ratio of

English books : total books