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Finding the Fourth Proportional to 579.49, 867.98 and 481.75

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Solution

The fourth proportional to 579.49, 867.98 and 481.75 is: 721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.49 : 867.98 = 481.75 : x
  2. Step 2: Convert to fraction form
    579.49/867.98 = 481.75/x
  3. Step 3: Cross multiply
    579.49x = 867.98 × 481.75
  4. Step 4: Simplify right side
    579.49x = 418,148.40
  5. Step 5: Solve for x
    x = 418,148.40/579.49
  6. Step 6: Final answer
    x = 721.58

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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.