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Finding the Fourth Proportional to 104.11, 156.03 and 55.97

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Solution

The fourth proportional to 104.11, 156.03 and 55.97 is: 83.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.11 : 156.03 = 55.97 : x
  2. Step 2: Convert to fraction form
    104.11/156.03 = 55.97/x
  3. Step 3: Cross multiply
    104.11x = 156.03 × 55.97
  4. Step 4: Simplify right side
    104.11x = 8,732.72
  5. Step 5: Solve for x
    x = 8,732.72/104.11
  6. Step 6: Final answer
    x = 83.88

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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.