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Finding the Fourth Proportional to 627.44, 867.29 and 480.73

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Solution

The fourth proportional to 627.44, 867.29 and 480.73 is: 664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.44 : 867.29 = 480.73 : x
  2. Step 2: Convert to fraction form
    627.44/867.29 = 480.73/x
  3. Step 3: Cross multiply
    627.44x = 867.29 × 480.73
  4. Step 4: Simplify right side
    627.44x = 416,932.32
  5. Step 5: Solve for x
    x = 416,932.32/627.44
  6. Step 6: Final answer
    x = 664.50

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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.