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Finding the Fourth Proportional to 481.48, 663.78 and 363.40

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Solution

The fourth proportional to 481.48, 663.78 and 363.40 is: 500.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.48 : 663.78 = 363.40 : x
  2. Step 2: Convert to fraction form
    481.48/663.78 = 363.40/x
  3. Step 3: Cross multiply
    481.48x = 663.78 × 363.40
  4. Step 4: Simplify right side
    481.48x = 241,217.65
  5. Step 5: Solve for x
    x = 241,217.65/481.48
  6. Step 6: Final answer
    x = 500.99

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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.