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Finding the Fourth Proportional to 575.08, 792.78 and 353.89

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Solution

The fourth proportional to 575.08, 792.78 and 353.89 is: 487.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.08 : 792.78 = 353.89 : x
  2. Step 2: Convert to fraction form
    575.08/792.78 = 353.89/x
  3. Step 3: Cross multiply
    575.08x = 792.78 × 353.89
  4. Step 4: Simplify right side
    575.08x = 280,552.95
  5. Step 5: Solve for x
    x = 280,552.95/575.08
  6. Step 6: Final answer
    x = 487.85

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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.