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Finding the Fourth Proportional to 617.68, 927.25 and 487.77

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Solution

The fourth proportional to 617.68, 927.25 and 487.77 is: 732.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.68 : 927.25 = 487.77 : x
  2. Step 2: Convert to fraction form
    617.68/927.25 = 487.77/x
  3. Step 3: Cross multiply
    617.68x = 927.25 × 487.77
  4. Step 4: Simplify right side
    617.68x = 452,285.25
  5. Step 5: Solve for x
    x = 452,285.25/617.68
  6. Step 6: Final answer
    x = 732.23

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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.