How do we define a ratio as something that is simple to understand? A ratio is defined as a proportion of one "thing" to a proportion of something else. This is expressed as 1 : [i]n[/i] where [i]n [/i] can be any value.[br][br]As an example we could have Lemons and Oranges as a ratio of 1 : 7 [br]What this means is that for every 1 Lemon we have 7 Oranges.[br]Take a look at the graphic below for an in depth explanation.