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Finding the Fourth Proportional to 694.95, 1,042.38 and 676.73

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Solution

The fourth proportional to 694.95, 1,042.38 and 676.73 is: 1,015.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.95 : 1,042.38 = 676.73 : x
  2. Step 2: Convert to fraction form
    694.95/1,042.38 = 676.73/x
  3. Step 3: Cross multiply
    694.95x = 1,042.38 × 676.73
  4. Step 4: Simplify right side
    694.95x = 705,404.61
  5. Step 5: Solve for x
    x = 705,404.61/694.95
  6. Step 6: Final answer
    x = 1,015.04

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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.