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Finding the Fourth Proportional to 150.14, 224.12 and 138.71

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Solution

The fourth proportional to 150.14, 224.12 and 138.71 is: 207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.14 : 224.12 = 138.71 : x
  2. Step 2: Convert to fraction form
    150.14/224.12 = 138.71/x
  3. Step 3: Cross multiply
    150.14x = 224.12 × 138.71
  4. Step 4: Simplify right side
    150.14x = 31,086.39
  5. Step 5: Solve for x
    x = 31,086.39/150.14
  6. Step 6: Final answer
    x = 207.06

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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.