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Finding the Third Proportional to 355.13 and 545.13

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Solution

The third proportional to 355.13 and 545.13 is: 836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.13 : 545.13 = 545.13 : x
  2. Step 2: Convert to fraction form
    355.13/545.13 = 545.13/x
  3. Step 3: Cross multiply
    355.13x = 545.13 × 545.13
  4. Step 4: Simplify right side
    355.13x = 297,161.27
  5. Step 5: Solve for x
    x = 297,161.27/355.13
  6. Step 6: Final answer
    x = 836.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.