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Finding the Fourth Proportional to 952.38, 1,319.85 and 939.18

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Solution

The fourth proportional to 952.38, 1,319.85 and 939.18 is: 1,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.38 : 1,319.85 = 939.18 : x
  2. Step 2: Convert to fraction form
    952.38/1,319.85 = 939.18/x
  3. Step 3: Cross multiply
    952.38x = 1,319.85 × 939.18
  4. Step 4: Simplify right side
    952.38x = 1,239,576.72
  5. Step 5: Solve for x
    x = 1,239,576.72/952.38
  6. Step 6: Final answer
    x = 1,301.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.