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Finding the Fourth Proportional to 195.96, 270.30 and 137.76

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Solution

The fourth proportional to 195.96, 270.30 and 137.76 is: 190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.96 : 270.30 = 137.76 : x
  2. Step 2: Convert to fraction form
    195.96/270.30 = 137.76/x
  3. Step 3: Cross multiply
    195.96x = 270.30 × 137.76
  4. Step 4: Simplify right side
    195.96x = 37,236.53
  5. Step 5: Solve for x
    x = 37,236.53/195.96
  6. Step 6: Final answer
    x = 190.02

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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.