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Finding the Fourth Proportional to 234.80, 352.02 and 80.63

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Solution

The fourth proportional to 234.80, 352.02 and 80.63 is: 120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.80 : 352.02 = 80.63 : x
  2. Step 2: Convert to fraction form
    234.80/352.02 = 80.63/x
  3. Step 3: Cross multiply
    234.80x = 352.02 × 80.63
  4. Step 4: Simplify right side
    234.80x = 28,383.37
  5. Step 5: Solve for x
    x = 28,383.37/234.80
  6. Step 6: Final answer
    x = 120.88

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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.