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Finding the Fourth Proportional to 238.11, 356.96 and 84.02

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Solution

The fourth proportional to 238.11, 356.96 and 84.02 is: 125.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.11 : 356.96 = 84.02 : x
  2. Step 2: Convert to fraction form
    238.11/356.96 = 84.02/x
  3. Step 3: Cross multiply
    238.11x = 356.96 × 84.02
  4. Step 4: Simplify right side
    238.11x = 29,991.78
  5. Step 5: Solve for x
    x = 29,991.78/238.11
  6. Step 6: Final answer
    x = 125.96

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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.