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Finding the Fourth Proportional to 234.98, 352.36 and 72.62

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Solution

The fourth proportional to 234.98, 352.36 and 72.62 is: 108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.98 : 352.36 = 72.62 : x
  2. Step 2: Convert to fraction form
    234.98/352.36 = 72.62/x
  3. Step 3: Cross multiply
    234.98x = 352.36 × 72.62
  4. Step 4: Simplify right side
    234.98x = 25,588.38
  5. Step 5: Solve for x
    x = 25,588.38/234.98
  6. Step 6: Final answer
    x = 108.90

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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.