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Finding the Fourth Proportional to 835.38, 1,150.17 and 686.27

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Solution

The fourth proportional to 835.38, 1,150.17 and 686.27 is: 944.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.38 : 1,150.17 = 686.27 : x
  2. Step 2: Convert to fraction form
    835.38/1,150.17 = 686.27/x
  3. Step 3: Cross multiply
    835.38x = 1,150.17 × 686.27
  4. Step 4: Simplify right side
    835.38x = 789,327.47
  5. Step 5: Solve for x
    x = 789,327.47/835.38
  6. Step 6: Final answer
    x = 944.87

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Double scale
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1.5x scale

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.