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Finding the Fourth Proportional to 205.44, 308.12 and 101.22

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Solution

The fourth proportional to 205.44, 308.12 and 101.22 is: 151.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.44 : 308.12 = 101.22 : x
  2. Step 2: Convert to fraction form
    205.44/308.12 = 101.22/x
  3. Step 3: Cross multiply
    205.44x = 308.12 × 101.22
  4. Step 4: Simplify right side
    205.44x = 31,187.91
  5. Step 5: Solve for x
    x = 31,187.91/205.44
  6. Step 6: Final answer
    x = 151.81

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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.