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Finding the Fourth Proportional to 40.67, 60.96 and 22.15

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Solution

The fourth proportional to 40.67, 60.96 and 22.15 is: 33.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.67 : 60.96 = 22.15 : x
  2. Step 2: Convert to fraction form
    40.67/60.96 = 22.15/x
  3. Step 3: Cross multiply
    40.67x = 60.96 × 22.15
  4. Step 4: Simplify right side
    40.67x = 1,350.26
  5. Step 5: Solve for x
    x = 1,350.26/40.67
  6. Step 6: Final answer
    x = 33.20

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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.