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Finding the Fourth Proportional to 205.52, 305.86 and 197.84

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Solution

The fourth proportional to 205.52, 305.86 and 197.84 is: 294.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.52 : 305.86 = 197.84 : x
  2. Step 2: Convert to fraction form
    205.52/305.86 = 197.84/x
  3. Step 3: Cross multiply
    205.52x = 305.86 × 197.84
  4. Step 4: Simplify right side
    205.52x = 60,511.34
  5. Step 5: Solve for x
    x = 60,511.34/205.52
  6. Step 6: Final answer
    x = 294.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.