When two different ratios are equivalent, they are meant to be in proportion. Mathematically, the comparison between two numbers or quantities is known as ‘proportions’.Generally, it is referred to as the number, part, or share considered in comparative relation to a whole. It is expressed using the symbol ‘::’ or ‘=’. For example, the time taken by a bike to cover 60 km per hour is equal to the time taken by it to cover a distance of 300 km for 5 hours. So, 60 km / hr = 300 k...