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Finding the Fourth Proportional to 574.23, 862.89 and 314.43

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Solution

The fourth proportional to 574.23, 862.89 and 314.43 is: 472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.23 : 862.89 = 314.43 : x
  2. Step 2: Convert to fraction form
    574.23/862.89 = 314.43/x
  3. Step 3: Cross multiply
    574.23x = 862.89 × 314.43
  4. Step 4: Simplify right side
    574.23x = 271,318.50
  5. Step 5: Solve for x
    x = 271,318.50/574.23
  6. Step 6: Final answer
    x = 472.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.