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Finding the Fourth Proportional to 133.28, 201.04 and 126.56

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Solution

The fourth proportional to 133.28, 201.04 and 126.56 is: 190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.28 : 201.04 = 126.56 : x
  2. Step 2: Convert to fraction form
    133.28/201.04 = 126.56/x
  3. Step 3: Cross multiply
    133.28x = 201.04 × 126.56
  4. Step 4: Simplify right side
    133.28x = 25,443.62
  5. Step 5: Solve for x
    x = 25,443.62/133.28
  6. Step 6: Final answer
    x = 190.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.