# 3.7 | Related Rates

Guidelines for Solving Related-Rate Problems

1. Identify all given quantities and quantities to be determined. Make a sketch and label the quantities.
2. Write an equation involving the variables whose rates of change either are given or are to be determined.
3. Using the Chain Rule, implicitly differentiate both sides of the equation with respect to time $$t$$.
4. Substitute into the resulting equation all known values for the variables and their rates of change. Then solve for the required rate of change.