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Finding the Fourth Proportional to 576.98, 866.03 and 545.76

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Solution

The fourth proportional to 576.98, 866.03 and 545.76 is: 819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.98 : 866.03 = 545.76 : x
  2. Step 2: Convert to fraction form
    576.98/866.03 = 545.76/x
  3. Step 3: Cross multiply
    576.98x = 866.03 × 545.76
  4. Step 4: Simplify right side
    576.98x = 472,644.53
  5. Step 5: Solve for x
    x = 472,644.53/576.98
  6. Step 6: Final answer
    x = 819.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.