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Finding the Fourth Proportional to 135.47, 185.84 and 131.88

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Solution

The fourth proportional to 135.47, 185.84 and 131.88 is: 180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.47 : 185.84 = 131.88 : x
  2. Step 2: Convert to fraction form
    135.47/185.84 = 131.88/x
  3. Step 3: Cross multiply
    135.47x = 185.84 × 131.88
  4. Step 4: Simplify right side
    135.47x = 24,508.81
  5. Step 5: Solve for x
    x = 24,508.81/135.47
  6. Step 6: Final answer
    x = 180.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.