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Finding the Fourth Proportional to 629.25, 867.15 and 481.02

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Solution

The fourth proportional to 629.25, 867.15 and 481.02 is: 662.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.25 : 867.15 = 481.02 : x
  2. Step 2: Convert to fraction form
    629.25/867.15 = 481.02/x
  3. Step 3: Cross multiply
    629.25x = 867.15 × 481.02
  4. Step 4: Simplify right side
    629.25x = 417,116.49
  5. Step 5: Solve for x
    x = 417,116.49/629.25
  6. Step 6: Final answer
    x = 662.88

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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.