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Finding the Fourth Proportional to 197.72, 295.43 and 170.76

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Solution

The fourth proportional to 197.72, 295.43 and 170.76 is: 255.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.72 : 295.43 = 170.76 : x
  2. Step 2: Convert to fraction form
    197.72/295.43 = 170.76/x
  3. Step 3: Cross multiply
    197.72x = 295.43 × 170.76
  4. Step 4: Simplify right side
    197.72x = 50,447.63
  5. Step 5: Solve for x
    x = 50,447.63/197.72
  6. Step 6: Final answer
    x = 255.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.