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Finding the Fourth Proportional to 579.76, 868.53 and 344.99

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Solution

The fourth proportional to 579.76, 868.53 and 344.99 is: 516.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.76 : 868.53 = 344.99 : x
  2. Step 2: Convert to fraction form
    579.76/868.53 = 344.99/x
  3. Step 3: Cross multiply
    579.76x = 868.53 × 344.99
  4. Step 4: Simplify right side
    579.76x = 299,632.44
  5. Step 5: Solve for x
    x = 299,632.44/579.76
  6. Step 6: Final answer
    x = 516.83

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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.