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Finding the Fourth Proportional to 154.37, 230.92 and 140.13

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Solution

The fourth proportional to 154.37, 230.92 and 140.13 is: 209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.37 : 230.92 = 140.13 : x
  2. Step 2: Convert to fraction form
    154.37/230.92 = 140.13/x
  3. Step 3: Cross multiply
    154.37x = 230.92 × 140.13
  4. Step 4: Simplify right side
    154.37x = 32,358.47
  5. Step 5: Solve for x
    x = 32,358.47/154.37
  6. Step 6: Final answer
    x = 209.61

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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.