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Finding the Fourth Proportional to 27.21, 40.96 and 24.85

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Solution

The fourth proportional to 27.21, 40.96 and 24.85 is: 37.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.21 : 40.96 = 24.85 : x
  2. Step 2: Convert to fraction form
    27.21/40.96 = 24.85/x
  3. Step 3: Cross multiply
    27.21x = 40.96 × 24.85
  4. Step 4: Simplify right side
    27.21x = 1,017.73
  5. Step 5: Solve for x
    x = 1,017.73/27.21
  6. Step 6: Final answer
    x = 37.41

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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.