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Finding the Fourth Proportional to 158.79, 237.10 and 140.61

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Solution

The fourth proportional to 158.79, 237.10 and 140.61 is: 209.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.79 : 237.10 = 140.61 : x
  2. Step 2: Convert to fraction form
    158.79/237.10 = 140.61/x
  3. Step 3: Cross multiply
    158.79x = 237.10 × 140.61
  4. Step 4: Simplify right side
    158.79x = 33,338.28
  5. Step 5: Solve for x
    x = 33,338.28/158.79
  6. Step 6: Final answer
    x = 209.95

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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.