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Finding the Fourth Proportional to 234.32, 351.49 and 138.06

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Solution

The fourth proportional to 234.32, 351.49 and 138.06 is: 207.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.32 : 351.49 = 138.06 : x
  2. Step 2: Convert to fraction form
    234.32/351.49 = 138.06/x
  3. Step 3: Cross multiply
    234.32x = 351.49 × 138.06
  4. Step 4: Simplify right side
    234.32x = 48,526.71
  5. Step 5: Solve for x
    x = 48,526.71/234.32
  6. Step 6: Final answer
    x = 207.10

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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.