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Finding the Fourth Proportional to 574.44, 857.49 and 531.61

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Solution

The fourth proportional to 574.44, 857.49 and 531.61 is: 793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.44 : 857.49 = 531.61 : x
  2. Step 2: Convert to fraction form
    574.44/857.49 = 531.61/x
  3. Step 3: Cross multiply
    574.44x = 857.49 × 531.61
  4. Step 4: Simplify right side
    574.44x = 455,853.32
  5. Step 5: Solve for x
    x = 455,853.32/574.44
  6. Step 6: Final answer
    x = 793.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.