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Finding the Fourth Proportional to 234.72, 352.05 and 61.38

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Solution

The fourth proportional to 234.72, 352.05 and 61.38 is: 92.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.72 : 352.05 = 61.38 : x
  2. Step 2: Convert to fraction form
    234.72/352.05 = 61.38/x
  3. Step 3: Cross multiply
    234.72x = 352.05 × 61.38
  4. Step 4: Simplify right side
    234.72x = 21,608.83
  5. Step 5: Solve for x
    x = 21,608.83/234.72
  6. Step 6: Final answer
    x = 92.06

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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.