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Finding the Fourth Proportional to 481.28, 722.25 and 359.78

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Solution

The fourth proportional to 481.28, 722.25 and 359.78 is: 539.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.28 : 722.25 = 359.78 : x
  2. Step 2: Convert to fraction form
    481.28/722.25 = 359.78/x
  3. Step 3: Cross multiply
    481.28x = 722.25 × 359.78
  4. Step 4: Simplify right side
    481.28x = 259,847.49
  5. Step 5: Solve for x
    x = 259,847.49/481.28
  6. Step 6: Final answer
    x = 539.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.