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Finding the Fourth Proportional to 205.56, 284.10 and 197.88

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Solution

The fourth proportional to 205.56, 284.10 and 197.88 is: 273.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.56 : 284.10 = 197.88 : x
  2. Step 2: Convert to fraction form
    205.56/284.10 = 197.88/x
  3. Step 3: Cross multiply
    205.56x = 284.10 × 197.88
  4. Step 4: Simplify right side
    205.56x = 56,217.71
  5. Step 5: Solve for x
    x = 56,217.71/205.56
  6. Step 6: Final answer
    x = 273.49

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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.