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Finding the Fourth Proportional to 40.89, 60.87 and 40.32

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Solution

The fourth proportional to 40.89, 60.87 and 40.32 is: 60.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.89 : 60.87 = 40.32 : x
  2. Step 2: Convert to fraction form
    40.89/60.87 = 40.32/x
  3. Step 3: Cross multiply
    40.89x = 60.87 × 40.32
  4. Step 4: Simplify right side
    40.89x = 2,454.28
  5. Step 5: Solve for x
    x = 2,454.28/40.89
  6. Step 6: Final answer
    x = 60.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.