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Finding the Fourth Proportional to 627.94, 867.98 and 481.23

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Solution

The fourth proportional to 627.94, 867.98 and 481.23 is: 665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.94 : 867.98 = 481.23 : x
  2. Step 2: Convert to fraction form
    627.94/867.98 = 481.23/x
  3. Step 3: Cross multiply
    627.94x = 867.98 × 481.23
  4. Step 4: Simplify right side
    627.94x = 417,698.02
  5. Step 5: Solve for x
    x = 417,698.02/627.94
  6. Step 6: Final answer
    x = 665.19

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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.