Finding the Third Proportional to 87 and 216.50
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Solution
The third proportional to 87 and 216.50 is: 538.76
Step by Step Solution
- Step 1: Write the proportion equation
87 : 216.50 = 216.50 : x - Step 2: Convert to fraction form
87/216.50 = 216.50/x - Step 3: Cross multiply
87x = 216.50 × 216.50 - Step 4: Simplify right side
87x = 46,872.25 - Step 5: Solve for x
x = 46,872.25/87 - Step 6: Final answer
x = 538.76
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Why These Related Problems?
These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.