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Finding the Fourth Proportional to 577.28, 863.98 and 481.20

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Solution

The fourth proportional to 577.28, 863.98 and 481.20 is: 720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.28 : 863.98 = 481.20 : x
  2. Step 2: Convert to fraction form
    577.28/863.98 = 481.20/x
  3. Step 3: Cross multiply
    577.28x = 863.98 × 481.20
  4. Step 4: Simplify right side
    577.28x = 415,747.18
  5. Step 5: Solve for x
    x = 415,747.18/577.28
  6. Step 6: Final answer
    x = 720.18

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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.