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Finding the Fourth Proportional to 519.73, 717.22 and 283.69

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Solution

The fourth proportional to 519.73, 717.22 and 283.69 is: 391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.73 : 717.22 = 283.69 : x
  2. Step 2: Convert to fraction form
    519.73/717.22 = 283.69/x
  3. Step 3: Cross multiply
    519.73x = 717.22 × 283.69
  4. Step 4: Simplify right side
    519.73x = 203,468.14
  5. Step 5: Solve for x
    x = 203,468.14/519.73
  6. Step 6: Final answer
    x = 391.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.