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Finding the Fourth Proportional to 617.16, 926.10 and 487.56

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Solution

The fourth proportional to 617.16, 926.10 and 487.56 is: 731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.16 : 926.10 = 487.56 : x
  2. Step 2: Convert to fraction form
    617.16/926.10 = 487.56/x
  3. Step 3: Cross multiply
    617.16x = 926.10 × 487.56
  4. Step 4: Simplify right side
    617.16x = 451,529.32
  5. Step 5: Solve for x
    x = 451,529.32/617.16
  6. Step 6: Final answer
    x = 731.62

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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.