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Finding the Fourth Proportional to 834.27, 1,250.04 and 286.15

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Solution

The fourth proportional to 834.27, 1,250.04 and 286.15 is: 428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.27 : 1,250.04 = 286.15 : x
  2. Step 2: Convert to fraction form
    834.27/1,250.04 = 286.15/x
  3. Step 3: Cross multiply
    834.27x = 1,250.04 × 286.15
  4. Step 4: Simplify right side
    834.27x = 357,698.95
  5. Step 5: Solve for x
    x = 357,698.95/834.27
  6. Step 6: Final answer
    x = 428.76

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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.