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Finding the Fourth Proportional to 773.93, 1,067.86 and 463.61

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Solution

The fourth proportional to 773.93, 1,067.86 and 463.61 is: 639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.93 : 1,067.86 = 463.61 : x
  2. Step 2: Convert to fraction form
    773.93/1,067.86 = 463.61/x
  3. Step 3: Cross multiply
    773.93x = 1,067.86 × 463.61
  4. Step 4: Simplify right side
    773.93x = 495,070.57
  5. Step 5: Solve for x
    x = 495,070.57/773.93
  6. Step 6: Final answer
    x = 639.68

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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.