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Finding the Fourth Proportional to 38.32, 52.90 and 23.78

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Solution

The fourth proportional to 38.32, 52.90 and 23.78 is: 32.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.32 : 52.90 = 23.78 : x
  2. Step 2: Convert to fraction form
    38.32/52.90 = 23.78/x
  3. Step 3: Cross multiply
    38.32x = 52.90 × 23.78
  4. Step 4: Simplify right side
    38.32x = 1,258.03
  5. Step 5: Solve for x
    x = 1,258.03/38.32
  6. Step 6: Final answer
    x = 32.83

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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.