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Finding the Fourth Proportional to 559.85, 841.29 and 545.27

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Solution

The fourth proportional to 559.85, 841.29 and 545.27 is: 819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.85 : 841.29 = 545.27 : x
  2. Step 2: Convert to fraction form
    559.85/841.29 = 545.27/x
  3. Step 3: Cross multiply
    559.85x = 841.29 × 545.27
  4. Step 4: Simplify right side
    559.85x = 458,723.95
  5. Step 5: Solve for x
    x = 458,723.95/559.85
  6. Step 6: Final answer
    x = 819.38

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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.