Finding the Third Proportional to 615 and 1,218
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Solution
The third proportional to 615 and 1,218 is: 2,412.23
Step by Step Solution
- Step 1: Write the proportion equation
615 : 1,218 = 1,218 : x - Step 2: Convert to fraction form
615/1,218 = 1,218/x - Step 3: Cross multiply
615x = 1,218 × 1,218 - Step 4: Simplify right side
615x = 1,483,524 - Step 5: Solve for x
x = 1,483,524/615 - Step 6: Final answer
x = 2,412.23
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These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.