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Finding the Fourth Proportional to 132.79, 199.19 and 131.26

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Solution

The fourth proportional to 132.79, 199.19 and 131.26 is: 196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.79 : 199.19 = 131.26 : x
  2. Step 2: Convert to fraction form
    132.79/199.19 = 131.26/x
  3. Step 3: Cross multiply
    132.79x = 199.19 × 131.26
  4. Step 4: Simplify right side
    132.79x = 26,145.68
  5. Step 5: Solve for x
    x = 26,145.68/132.79
  6. Step 6: Final answer
    x = 196.89

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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.