Ratio says how many times and proportion says equal to ratio.
When we compared the two quantities in terms of ‘how many times’. This comparison is known as the Ratio. We denote ratio using symbol‘:’
3/1 says 3:1
Two quantities can be compared only if they are in the same unit.
If two ratios are equal, we say that they are in proportion and use the symbol‘::’ or‘=’ to equate the two ratios.
If two ratios are not equal, then we say that they are not in proportion.
The method in which first we find the value of one unit and then the value of required number of units is known as Unitary Method.