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Finding the Fourth Proportional to 234.34, 351.36 and 80.29

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Solution

The fourth proportional to 234.34, 351.36 and 80.29 is: 120.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.34 : 351.36 = 80.29 : x
  2. Step 2: Convert to fraction form
    234.34/351.36 = 80.29/x
  3. Step 3: Cross multiply
    234.34x = 351.36 × 80.29
  4. Step 4: Simplify right side
    234.34x = 28,210.69
  5. Step 5: Solve for x
    x = 28,210.69/234.34
  6. Step 6: Final answer
    x = 120.38

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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.