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Finding the Fourth Proportional to 149.41, 224.12 and 138.27

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Solution

The fourth proportional to 149.41, 224.12 and 138.27 is: 207.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.41 : 224.12 = 138.27 : x
  2. Step 2: Convert to fraction form
    149.41/224.12 = 138.27/x
  3. Step 3: Cross multiply
    149.41x = 224.12 × 138.27
  4. Step 4: Simplify right side
    149.41x = 30,989.07
  5. Step 5: Solve for x
    x = 30,989.07/149.41
  6. Step 6: Final answer
    x = 207.41

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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.