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Finding the Fourth Proportional to 205.92, 284.04 and 140.44

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Solution

The fourth proportional to 205.92, 284.04 and 140.44 is: 193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.92 : 284.04 = 140.44 : x
  2. Step 2: Convert to fraction form
    205.92/284.04 = 140.44/x
  3. Step 3: Cross multiply
    205.92x = 284.04 × 140.44
  4. Step 4: Simplify right side
    205.92x = 39,890.58
  5. Step 5: Solve for x
    x = 39,890.58/205.92
  6. Step 6: Final answer
    x = 193.72

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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.