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Finding the Fourth Proportional to 41.76, 62.40 and 34.56

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Solution

The fourth proportional to 41.76, 62.40 and 34.56 is: 51.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.76 : 62.40 = 34.56 : x
  2. Step 2: Convert to fraction form
    41.76/62.40 = 34.56/x
  3. Step 3: Cross multiply
    41.76x = 62.40 × 34.56
  4. Step 4: Simplify right side
    41.76x = 2,156.54
  5. Step 5: Solve for x
    x = 2,156.54/41.76
  6. Step 6: Final answer
    x = 51.64

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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.