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Finding the Fourth Proportional to 89.67, 134.51 and 41.57

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Solution

The fourth proportional to 89.67, 134.51 and 41.57 is: 62.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.67 : 134.51 = 41.57 : x
  2. Step 2: Convert to fraction form
    89.67/134.51 = 41.57/x
  3. Step 3: Cross multiply
    89.67x = 134.51 × 41.57
  4. Step 4: Simplify right side
    89.67x = 5,591.58
  5. Step 5: Solve for x
    x = 5,591.58/89.67
  6. Step 6: Final answer
    x = 62.36

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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.