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Finding the Fourth Proportional to 185.68, 279.51 and 131.96

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Solution

The fourth proportional to 185.68, 279.51 and 131.96 is: 198.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.68 : 279.51 = 131.96 : x
  2. Step 2: Convert to fraction form
    185.68/279.51 = 131.96/x
  3. Step 3: Cross multiply
    185.68x = 279.51 × 131.96
  4. Step 4: Simplify right side
    185.68x = 36,884.14
  5. Step 5: Solve for x
    x = 36,884.14/185.68
  6. Step 6: Final answer
    x = 198.64

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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.