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Finding the Fourth Proportional to 713.84, 1,067.92 and 635.90

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Solution

The fourth proportional to 713.84, 1,067.92 and 635.90 is: 951.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.84 : 1,067.92 = 635.90 : x
  2. Step 2: Convert to fraction form
    713.84/1,067.92 = 635.90/x
  3. Step 3: Cross multiply
    713.84x = 1,067.92 × 635.90
  4. Step 4: Simplify right side
    713.84x = 679,083.40
  5. Step 5: Solve for x
    x = 679,083.40/713.84
  6. Step 6: Final answer
    x = 951.32

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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.