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Finding the Third Proportional to 368.38 and 516.13

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Solution

The third proportional to 368.38 and 516.13 is: 723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.38 : 516.13 = 516.13 : x
  2. Step 2: Convert to fraction form
    368.38/516.13 = 516.13/x
  3. Step 3: Cross multiply
    368.38x = 516.13 × 516.13
  4. Step 4: Simplify right side
    368.38x = 266,385.02
  5. Step 5: Solve for x
    x = 266,385.02/368.38
  6. Step 6: Final answer
    x = 723.14

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.