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Finding the Fourth Proportional to 57.38, 79.25 and 38.03

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Solution

The fourth proportional to 57.38, 79.25 and 38.03 is: 52.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.38 : 79.25 = 38.03 : x
  2. Step 2: Convert to fraction form
    57.38/79.25 = 38.03/x
  3. Step 3: Cross multiply
    57.38x = 79.25 × 38.03
  4. Step 4: Simplify right side
    57.38x = 3,013.29
  5. Step 5: Solve for x
    x = 3,013.29/57.38
  6. Step 6: Final answer
    x = 52.52

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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.