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Finding the Fourth Proportional to 197.73, 297.05 and 143.91

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Solution

The fourth proportional to 197.73, 297.05 and 143.91 is: 216.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.73 : 297.05 = 143.91 : x
  2. Step 2: Convert to fraction form
    197.73/297.05 = 143.91/x
  3. Step 3: Cross multiply
    197.73x = 297.05 × 143.91
  4. Step 4: Simplify right side
    197.73x = 42,747.75
  5. Step 5: Solve for x
    x = 42,747.75/197.73
  6. Step 6: Final answer
    x = 216.19

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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.