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Finding the Fourth Proportional to 234.98, 352.51 and 72.69

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Solution

The fourth proportional to 234.98, 352.51 and 72.69 is: 109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.98 : 352.51 = 72.69 : x
  2. Step 2: Convert to fraction form
    234.98/352.51 = 72.69/x
  3. Step 3: Cross multiply
    234.98x = 352.51 × 72.69
  4. Step 4: Simplify right side
    234.98x = 25,623.95
  5. Step 5: Solve for x
    x = 25,623.95/234.98
  6. Step 6: Final answer
    x = 109.05

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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.