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Finding the Fourth Proportional to 836.38, 1,251.93 and 748.33

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Solution

The fourth proportional to 836.38, 1,251.93 and 748.33 is: 1,120.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.38 : 1,251.93 = 748.33 : x
  2. Step 2: Convert to fraction form
    836.38/1,251.93 = 748.33/x
  3. Step 3: Cross multiply
    836.38x = 1,251.93 × 748.33
  4. Step 4: Simplify right side
    836.38x = 936,850.52
  5. Step 5: Solve for x
    x = 936,850.52/836.38
  6. Step 6: Final answer
    x = 1,120.13

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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.