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Finding the Fourth Proportional to 197.00, 271.85 and 109.68

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Solution

The fourth proportional to 197.00, 271.85 and 109.68 is: 151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.00 : 271.85 = 109.68 : x
  2. Step 2: Convert to fraction form
    197.00/271.85 = 109.68/x
  3. Step 3: Cross multiply
    197.00x = 271.85 × 109.68
  4. Step 4: Simplify right side
    197.00x = 29,815.96
  5. Step 5: Solve for x
    x = 29,815.96/197.00
  6. Step 6: Final answer
    x = 151.35

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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.