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Finding the Fourth Proportional to 41.82, 57.74 and 28.03

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Solution

The fourth proportional to 41.82, 57.74 and 28.03 is: 38.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.82 : 57.74 = 28.03 : x
  2. Step 2: Convert to fraction form
    41.82/57.74 = 28.03/x
  3. Step 3: Cross multiply
    41.82x = 57.74 × 28.03
  4. Step 4: Simplify right side
    41.82x = 1,618.02
  5. Step 5: Solve for x
    x = 1,618.02/41.82
  6. Step 6: Final answer
    x = 38.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.