Proportion word problems

A proportion is an equation that states that two ratios are equal.

To set up a proportion, identify the two ratios involved in the problem and set them equal to each other.

Percent grade = (Number of correct answers / Total number of problems) x 100.

To convert a ratio to a percentage, divide the numerator by the denominator and multiply by 100.

The relationship is defined by the formula: Distance = Rate x Time.

To find the actual length, use the scale ratio to set up a proportion and solve for the unknown length.

The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Cross-multiply the known values and then divide to isolate the unknown.

Equivalent ratios help to establish relationships between different quantities, allowing for the solution of unknown values.

Proportions can be used in various real-life situations such as cooking, budgeting, and scaling models.