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Finding the Fourth Proportional to 834.48, 1,250.76 and 628.38

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Solution

The fourth proportional to 834.48, 1,250.76 and 628.38 is: 941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.48 : 1,250.76 = 628.38 : x
  2. Step 2: Convert to fraction form
    834.48/1,250.76 = 628.38/x
  3. Step 3: Cross multiply
    834.48x = 1,250.76 × 628.38
  4. Step 4: Simplify right side
    834.48x = 785,952.57
  5. Step 5: Solve for x
    x = 785,952.57/834.48
  6. Step 6: Final answer
    x = 941.85

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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.