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Finding the Fourth Proportional to 25.48, 37.96 and 22.78

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Solution

The fourth proportional to 25.48, 37.96 and 22.78 is: 33.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.48 : 37.96 = 22.78 : x
  2. Step 2: Convert to fraction form
    25.48/37.96 = 22.78/x
  3. Step 3: Cross multiply
    25.48x = 37.96 × 22.78
  4. Step 4: Simplify right side
    25.48x = 864.73
  5. Step 5: Solve for x
    x = 864.73/25.48
  6. Step 6: Final answer
    x = 33.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.