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Finding the Fourth Proportional to 24.96, 34.40 and 20.10

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Solution

The fourth proportional to 24.96, 34.40 and 20.10 is: 27.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.96 : 34.40 = 20.10 : x
  2. Step 2: Convert to fraction form
    24.96/34.40 = 20.10/x
  3. Step 3: Cross multiply
    24.96x = 34.40 × 20.10
  4. Step 4: Simplify right side
    24.96x = 691.44
  5. Step 5: Solve for x
    x = 691.44/24.96
  6. Step 6: Final answer
    x = 27.70

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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.