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Finding the Fourth Proportional to 195.98, 270.44 and 122.29

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Solution

The fourth proportional to 195.98, 270.44 and 122.29 is: 168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.98 : 270.44 = 122.29 : x
  2. Step 2: Convert to fraction form
    195.98/270.44 = 122.29/x
  3. Step 3: Cross multiply
    195.98x = 270.44 × 122.29
  4. Step 4: Simplify right side
    195.98x = 33,072.11
  5. Step 5: Solve for x
    x = 33,072.11/195.98
  6. Step 6: Final answer
    x = 168.75

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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.