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Finding the Fourth Proportional to 579.92, 863.26 and 571.28

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Solution

The fourth proportional to 579.92, 863.26 and 571.28 is: 850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.92 : 863.26 = 571.28 : x
  2. Step 2: Convert to fraction form
    579.92/863.26 = 571.28/x
  3. Step 3: Cross multiply
    579.92x = 863.26 × 571.28
  4. Step 4: Simplify right side
    579.92x = 493,163.17
  5. Step 5: Solve for x
    x = 493,163.17/579.92
  6. Step 6: Final answer
    x = 850.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.