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Finding the Fourth Proportional to 617.84, 926.92 and 271.20

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Solution

The fourth proportional to 617.84, 926.92 and 271.20 is: 406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.84 : 926.92 = 271.20 : x
  2. Step 2: Convert to fraction form
    617.84/926.92 = 271.20/x
  3. Step 3: Cross multiply
    617.84x = 926.92 × 271.20
  4. Step 4: Simplify right side
    617.84x = 251,380.70
  5. Step 5: Solve for x
    x = 251,380.70/617.84
  6. Step 6: Final answer
    x = 406.87

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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.