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Finding the Fourth Proportional to 113.11, 156.04 and 63.97

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Solution

The fourth proportional to 113.11, 156.04 and 63.97 is: 88.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.11 : 156.04 = 63.97 : x
  2. Step 2: Convert to fraction form
    113.11/156.04 = 63.97/x
  3. Step 3: Cross multiply
    113.11x = 156.04 × 63.97
  4. Step 4: Simplify right side
    113.11x = 9,981.88
  5. Step 5: Solve for x
    x = 9,981.88/113.11
  6. Step 6: Final answer
    x = 88.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.