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Finding the Fourth Proportional to 148.72, 204.14 and 140.62

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Solution

The fourth proportional to 148.72, 204.14 and 140.62 is: 193.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.72 : 204.14 = 140.62 : x
  2. Step 2: Convert to fraction form
    148.72/204.14 = 140.62/x
  3. Step 3: Cross multiply
    148.72x = 204.14 × 140.62
  4. Step 4: Simplify right side
    148.72x = 28,706.17
  5. Step 5: Solve for x
    x = 28,706.17/148.72
  6. Step 6: Final answer
    x = 193.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.