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Finding the Fourth Proportional to 574.33, 861.49 and 189.58

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Solution

The fourth proportional to 574.33, 861.49 and 189.58 is: 284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.33 : 861.49 = 189.58 : x
  2. Step 2: Convert to fraction form
    574.33/861.49 = 189.58/x
  3. Step 3: Cross multiply
    574.33x = 861.49 × 189.58
  4. Step 4: Simplify right side
    574.33x = 163,321.27
  5. Step 5: Solve for x
    x = 163,321.27/574.33
  6. Step 6: Final answer
    x = 284.37

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Similar ratio
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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.