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Finding the Fourth Proportional to 206.22, 308.43 and 179.58

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Solution

The fourth proportional to 206.22, 308.43 and 179.58 is: 268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.22 : 308.43 = 179.58 : x
  2. Step 2: Convert to fraction form
    206.22/308.43 = 179.58/x
  3. Step 3: Cross multiply
    206.22x = 308.43 × 179.58
  4. Step 4: Simplify right side
    206.22x = 55,387.86
  5. Step 5: Solve for x
    x = 55,387.86/206.22
  6. Step 6: Final answer
    x = 268.59

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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.