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Finding the Fourth Proportional to 234.77, 352.01 and 138.38

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Solution

The fourth proportional to 234.77, 352.01 and 138.38 is: 207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.77 : 352.01 = 138.38 : x
  2. Step 2: Convert to fraction form
    234.77/352.01 = 138.38/x
  3. Step 3: Cross multiply
    234.77x = 352.01 × 138.38
  4. Step 4: Simplify right side
    234.77x = 48,711.14
  5. Step 5: Solve for x
    x = 48,711.14/234.77
  6. Step 6: Final answer
    x = 207.48

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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.