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Finding the Fourth Proportional to 195.47, 269.68 and 120.70

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Solution

The fourth proportional to 195.47, 269.68 and 120.70 is: 166.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.47 : 269.68 = 120.70 : x
  2. Step 2: Convert to fraction form
    195.47/269.68 = 120.70/x
  3. Step 3: Cross multiply
    195.47x = 269.68 × 120.70
  4. Step 4: Simplify right side
    195.47x = 32,548.42
  5. Step 5: Solve for x
    x = 32,548.42/195.47
  6. Step 6: Final answer
    x = 166.52

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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.