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Finding the Fourth Proportional to 126.17, 189.23 and 34.85

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Solution

The fourth proportional to 126.17, 189.23 and 34.85 is: 52.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.17 : 189.23 = 34.85 : x
  2. Step 2: Convert to fraction form
    126.17/189.23 = 34.85/x
  3. Step 3: Cross multiply
    126.17x = 189.23 × 34.85
  4. Step 4: Simplify right side
    126.17x = 6,593.81
  5. Step 5: Solve for x
    x = 6,593.81/126.17
  6. Step 6: Final answer
    x = 52.26

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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.