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Finding the Fourth Proportional to 574.08, 792.57 and 398.04

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Solution

The fourth proportional to 574.08, 792.57 and 398.04 is: 549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.08 : 792.57 = 398.04 : x
  2. Step 2: Convert to fraction form
    574.08/792.57 = 398.04/x
  3. Step 3: Cross multiply
    574.08x = 792.57 × 398.04
  4. Step 4: Simplify right side
    574.08x = 315,474.56
  5. Step 5: Solve for x
    x = 315,474.56/574.08
  6. Step 6: Final answer
    x = 549.53

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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.