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Finding the Fourth Proportional to 574.40, 793.13 and 353.40

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Solution

The fourth proportional to 574.40, 793.13 and 353.40 is: 487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.40 : 793.13 = 353.40 : x
  2. Step 2: Convert to fraction form
    574.40/793.13 = 353.40/x
  3. Step 3: Cross multiply
    574.40x = 793.13 × 353.40
  4. Step 4: Simplify right side
    574.40x = 280,290.38
  5. Step 5: Solve for x
    x = 280,290.38/574.40
  6. Step 6: Final answer
    x = 487.97

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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.