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Finding the Fourth Proportional to 574.13, 792.57 and 553.61

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Solution

The fourth proportional to 574.13, 792.57 and 553.61 is: 764.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.13 : 792.57 = 553.61 : x
  2. Step 2: Convert to fraction form
    574.13/792.57 = 553.61/x
  3. Step 3: Cross multiply
    574.13x = 792.57 × 553.61
  4. Step 4: Simplify right side
    574.13x = 438,770.71
  5. Step 5: Solve for x
    x = 438,770.71/574.13
  6. Step 6: Final answer
    x = 764.24

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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.