Final answer:
A ratio is a comparison between two quantities, and it can be written as a fraction, with a colon, or with the words 'to' or 'as.' In a geometric context, a scale ratio compares the dimensions of an actual object to the dimensions of a scale drawing or model that represents the actual object.
Step-by-step explanation:
A ratio is a comparison between two quantities, and it can be written as a fraction, with a colon, or with the words 'to' or 'as.' For example, if you have 5 blue marbles and 3 yellow marbles, the ratio of blue marbles to yellow marbles is 5:3 or 5 to 3.
If you have a recipe that calls for 2 cups of flour and 1 cup of sugar, the ratio of flour to sugar is 2:1 or 2 to 1.
In a geometric context, a scale ratio compares the dimensions of an actual object to the dimensions of a scale drawing or model that represents the actual object. For example, if 1 inch on a map represents 100 feet in real life, the scale ratio is 1 inch to 100 feet.