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Finding the Fourth Proportional to 205.40, 284.75 and 194.44

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Solution

The fourth proportional to 205.40, 284.75 and 194.44 is: 269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.40 : 284.75 = 194.44 : x
  2. Step 2: Convert to fraction form
    205.40/284.75 = 194.44/x
  3. Step 3: Cross multiply
    205.40x = 284.75 × 194.44
  4. Step 4: Simplify right side
    205.40x = 55,366.79
  5. Step 5: Solve for x
    x = 55,366.79/205.40
  6. Step 6: Final answer
    x = 269.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.