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Finding the Fourth Proportional to 386.82, 580.33 and 204.44

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Solution

The fourth proportional to 386.82, 580.33 and 204.44 is: 306.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.82 : 580.33 = 204.44 : x
  2. Step 2: Convert to fraction form
    386.82/580.33 = 204.44/x
  3. Step 3: Cross multiply
    386.82x = 580.33 × 204.44
  4. Step 4: Simplify right side
    386.82x = 118,640.02
  5. Step 5: Solve for x
    x = 118,640.02/386.82
  6. Step 6: Final answer
    x = 306.71

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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.