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Finding the Fourth Proportional to 41.08, 61.45 and 30.79

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Solution

The fourth proportional to 41.08, 61.45 and 30.79 is: 46.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.08 : 61.45 = 30.79 : x
  2. Step 2: Convert to fraction form
    41.08/61.45 = 30.79/x
  3. Step 3: Cross multiply
    41.08x = 61.45 × 30.79
  4. Step 4: Simplify right side
    41.08x = 1,891.96
  5. Step 5: Solve for x
    x = 1,891.96/41.08
  6. Step 6: Final answer
    x = 46.06

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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.