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Finding the Fourth Proportional to 574.28, 792.56 and 480.86

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Solution

The fourth proportional to 574.28, 792.56 and 480.86 is: 663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.28 : 792.56 = 480.86 : x
  2. Step 2: Convert to fraction form
    574.28/792.56 = 480.86/x
  3. Step 3: Cross multiply
    574.28x = 792.56 × 480.86
  4. Step 4: Simplify right side
    574.28x = 381,110.40
  5. Step 5: Solve for x
    x = 381,110.40/574.28
  6. Step 6: Final answer
    x = 663.63

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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.