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Finding the Fourth Proportional to 158.67, 237.85 and 84.59

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Solution

The fourth proportional to 158.67, 237.85 and 84.59 is: 126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.67 : 237.85 = 84.59 : x
  2. Step 2: Convert to fraction form
    158.67/237.85 = 84.59/x
  3. Step 3: Cross multiply
    158.67x = 237.85 × 84.59
  4. Step 4: Simplify right side
    158.67x = 20,119.73
  5. Step 5: Solve for x
    x = 20,119.73/158.67
  6. Step 6: Final answer
    x = 126.80

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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.