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Finding the Fourth Proportional to 22.89, 34.38 and 15.71

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Solution

The fourth proportional to 22.89, 34.38 and 15.71 is: 23.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.89 : 34.38 = 15.71 : x
  2. Step 2: Convert to fraction form
    22.89/34.38 = 15.71/x
  3. Step 3: Cross multiply
    22.89x = 34.38 × 15.71
  4. Step 4: Simplify right side
    22.89x = 539.94
  5. Step 5: Solve for x
    x = 539.94/22.89
  6. Step 6: Final answer
    x = 23.59

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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.