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Finding the Fourth Proportional to 24.24, 33.27 and 21.81

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Solution

The fourth proportional to 24.24, 33.27 and 21.81 is: 29.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.24 : 33.27 = 21.81 : x
  2. Step 2: Convert to fraction form
    24.24/33.27 = 21.81/x
  3. Step 3: Cross multiply
    24.24x = 33.27 × 21.81
  4. Step 4: Simplify right side
    24.24x = 725.62
  5. Step 5: Solve for x
    x = 725.62/24.24
  6. Step 6: Final answer
    x = 29.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.