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Finding the Fourth Proportional to 150.40, 224.48 and 129.88

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Solution

The fourth proportional to 150.40, 224.48 and 129.88 is: 193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.40 : 224.48 = 129.88 : x
  2. Step 2: Convert to fraction form
    150.40/224.48 = 129.88/x
  3. Step 3: Cross multiply
    150.40x = 224.48 × 129.88
  4. Step 4: Simplify right side
    150.40x = 29,155.46
  5. Step 5: Solve for x
    x = 29,155.46/150.40
  6. Step 6: Final answer
    x = 193.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.