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Finding the Fourth Proportional to 43.96, 66.25 and 41.90

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Solution

The fourth proportional to 43.96, 66.25 and 41.90 is: 63.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.96 : 66.25 = 41.90 : x
  2. Step 2: Convert to fraction form
    43.96/66.25 = 41.90/x
  3. Step 3: Cross multiply
    43.96x = 66.25 × 41.90
  4. Step 4: Simplify right side
    43.96x = 2,775.97
  5. Step 5: Solve for x
    x = 2,775.97/43.96
  6. Step 6: Final answer
    x = 63.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.