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Finding the Fourth Proportional to 773.82, 1,067.87 and 463.32

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Solution

The fourth proportional to 773.82, 1,067.87 and 463.32 is: 639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.82 : 1,067.87 = 463.32 : x
  2. Step 2: Convert to fraction form
    773.82/1,067.87 = 463.32/x
  3. Step 3: Cross multiply
    773.82x = 1,067.87 × 463.32
  4. Step 4: Simplify right side
    773.82x = 494,763.21
  5. Step 5: Solve for x
    x = 494,763.21/773.82
  6. Step 6: Final answer
    x = 639.38

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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.