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Finding the Fourth Proportional to 131.32, 197.73 and 116.20

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Solution

The fourth proportional to 131.32, 197.73 and 116.20 is: 174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.32 : 197.73 = 116.20 : x
  2. Step 2: Convert to fraction form
    131.32/197.73 = 116.20/x
  3. Step 3: Cross multiply
    131.32x = 197.73 × 116.20
  4. Step 4: Simplify right side
    131.32x = 22,976.23
  5. Step 5: Solve for x
    x = 22,976.23/131.32
  6. Step 6: Final answer
    x = 174.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.