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Finding the Fourth Proportional to 545.86, 751.17 and 502.66

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Solution

The fourth proportional to 545.86, 751.17 and 502.66 is: 691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.86 : 751.17 = 502.66 : x
  2. Step 2: Convert to fraction form
    545.86/751.17 = 502.66/x
  3. Step 3: Cross multiply
    545.86x = 751.17 × 502.66
  4. Step 4: Simplify right side
    545.86x = 377,583.11
  5. Step 5: Solve for x
    x = 377,583.11/545.86
  6. Step 6: Final answer
    x = 691.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.