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Finding the Fourth Proportional to 41.76, 62.16 and 40.32

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Solution

The fourth proportional to 41.76, 62.16 and 40.32 is: 60.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.76 : 62.16 = 40.32 : x
  2. Step 2: Convert to fraction form
    41.76/62.16 = 40.32/x
  3. Step 3: Cross multiply
    41.76x = 62.16 × 40.32
  4. Step 4: Simplify right side
    41.76x = 2,506.29
  5. Step 5: Solve for x
    x = 2,506.29/41.76
  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.