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Finding the Fourth Proportional to 148.43, 221.54 and 134.75

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Solution

The fourth proportional to 148.43, 221.54 and 134.75 is: 201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.43 : 221.54 = 134.75 : x
  2. Step 2: Convert to fraction form
    148.43/221.54 = 134.75/x
  3. Step 3: Cross multiply
    148.43x = 221.54 × 134.75
  4. Step 4: Simplify right side
    148.43x = 29,850.73
  5. Step 5: Solve for x
    x = 29,850.73/148.43
  6. Step 6: Final answer
    x = 201.12

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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.