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Finding the Fourth Proportional to 773.49, 1,067.36 and 458.74

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Solution

The fourth proportional to 773.49, 1,067.36 and 458.74 is: 633.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.49 : 1,067.36 = 458.74 : x
  2. Step 2: Convert to fraction form
    773.49/1,067.36 = 458.74/x
  3. Step 3: Cross multiply
    773.49x = 1,067.36 × 458.74
  4. Step 4: Simplify right side
    773.49x = 489,639.20
  5. Step 5: Solve for x
    x = 489,639.20/773.49
  6. Step 6: Final answer
    x = 633.03

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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.