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Finding the Fourth Proportional to 562.76, 844.76 and 408.77

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Solution

The fourth proportional to 562.76, 844.76 and 408.77 is: 613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.76 : 844.76 = 408.77 : x
  2. Step 2: Convert to fraction form
    562.76/844.76 = 408.77/x
  3. Step 3: Cross multiply
    562.76x = 844.76 × 408.77
  4. Step 4: Simplify right side
    562.76x = 345,312.55
  5. Step 5: Solve for x
    x = 345,312.55/562.76
  6. Step 6: Final answer
    x = 613.61

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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.