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Finding the Fourth Proportional to 134.41, 201.52 and 86.22

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Solution

The fourth proportional to 134.41, 201.52 and 86.22 is: 129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.41 : 201.52 = 86.22 : x
  2. Step 2: Convert to fraction form
    134.41/201.52 = 86.22/x
  3. Step 3: Cross multiply
    134.41x = 201.52 × 86.22
  4. Step 4: Simplify right side
    134.41x = 17,375.05
  5. Step 5: Solve for x
    x = 17,375.05/134.41
  6. Step 6: Final answer
    x = 129.27

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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.