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Finding the Fourth Proportional to 836.12, 1,247.60 and 737.71

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Solution

The fourth proportional to 836.12, 1,247.60 and 737.71 is: 1,100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.12 : 1,247.60 = 737.71 : x
  2. Step 2: Convert to fraction form
    836.12/1,247.60 = 737.71/x
  3. Step 3: Cross multiply
    836.12x = 1,247.60 × 737.71
  4. Step 4: Simplify right side
    836.12x = 920,365.72
  5. Step 5: Solve for x
    x = 920,365.72/836.12
  6. Step 6: Final answer
    x = 1,100.75

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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.