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Finding the Fourth Proportional to 89.32, 134.02 and 38

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Solution

The fourth proportional to 89.32, 134.02 and 38 is: 57.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.32 : 134.02 = 38 : x
  2. Step 2: Convert to fraction form
    89.32/134.02 = 38/x
  3. Step 3: Cross multiply
    89.32x = 134.02 × 38
  4. Step 4: Simplify right side
    89.32x = 5,092.76
  5. Step 5: Solve for x
    x = 5,092.76/89.32
  6. Step 6: Final answer
    x = 57.02

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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.