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Finding the Fourth Proportional to 234.66, 351.72 and 126.48

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Solution

The fourth proportional to 234.66, 351.72 and 126.48 is: 189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.66 : 351.72 = 126.48 : x
  2. Step 2: Convert to fraction form
    234.66/351.72 = 126.48/x
  3. Step 3: Cross multiply
    234.66x = 351.72 × 126.48
  4. Step 4: Simplify right side
    234.66x = 44,485.55
  5. Step 5: Solve for x
    x = 44,485.55/234.66
  6. Step 6: Final answer
    x = 189.57

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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.