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Finding the Fourth Proportional to 481.59, 720.13 and 344.21

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Solution

The fourth proportional to 481.59, 720.13 and 344.21 is: 514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.59 : 720.13 = 344.21 : x
  2. Step 2: Convert to fraction form
    481.59/720.13 = 344.21/x
  3. Step 3: Cross multiply
    481.59x = 720.13 × 344.21
  4. Step 4: Simplify right side
    481.59x = 247,875.95
  5. Step 5: Solve for x
    x = 247,875.95/481.59
  6. Step 6: Final answer
    x = 514.70

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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.