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Finding the Fourth Proportional to 126.28, 189.39 and 62.14

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Solution

The fourth proportional to 126.28, 189.39 and 62.14 is: 93.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.28 : 189.39 = 62.14 : x
  2. Step 2: Convert to fraction form
    126.28/189.39 = 62.14/x
  3. Step 3: Cross multiply
    126.28x = 189.39 × 62.14
  4. Step 4: Simplify right side
    126.28x = 11,768.69
  5. Step 5: Solve for x
    x = 11,768.69/126.28
  6. Step 6: Final answer
    x = 93.20

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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.