Finding the Third Proportional to 217.20 and 335.99
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Solution
The third proportional to 217.20 and 335.99 is: 519.75
Step by Step Solution
- Step 1: Write the proportion equation
217.20 : 335.99 = 335.99 : x - Step 2: Convert to fraction form
217.20/335.99 = 335.99/x - Step 3: Cross multiply
217.20x = 335.99 × 335.99 - Step 4: Simplify right side
217.20x = 112,888.13 - Step 5: Solve for x
x = 112,888.13/217.20 - Step 6: Final answer
x = 519.75
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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.