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Finding the Fourth Proportional to 197.73, 296.31 and 145.44

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Solution

The fourth proportional to 197.73, 296.31 and 145.44 is: 217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.73 : 296.31 = 145.44 : x
  2. Step 2: Convert to fraction form
    197.73/296.31 = 145.44/x
  3. Step 3: Cross multiply
    197.73x = 296.31 × 145.44
  4. Step 4: Simplify right side
    197.73x = 43,095.33
  5. Step 5: Solve for x
    x = 43,095.33/197.73
  6. Step 6: Final answer
    x = 217.95

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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.