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Finding the Fourth Proportional to 481.25, 663.89 and 323.93

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Solution

The fourth proportional to 481.25, 663.89 and 323.93 is: 446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.25 : 663.89 = 323.93 : x
  2. Step 2: Convert to fraction form
    481.25/663.89 = 323.93/x
  3. Step 3: Cross multiply
    481.25x = 663.89 × 323.93
  4. Step 4: Simplify right side
    481.25x = 215,048.95
  5. Step 5: Solve for x
    x = 215,048.95/481.25
  6. Step 6: Final answer
    x = 446.85

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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.