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Finding the Fourth Proportional to 98.82, 135.71 and 95.85

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Solution

The fourth proportional to 98.82, 135.71 and 95.85 is: 131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.82 : 135.71 = 95.85 : x
  2. Step 2: Convert to fraction form
    98.82/135.71 = 95.85/x
  3. Step 3: Cross multiply
    98.82x = 135.71 × 95.85
  4. Step 4: Simplify right side
    98.82x = 13,007.68
  5. Step 5: Solve for x
    x = 13,007.68/98.82
  6. Step 6: Final answer
    x = 131.63

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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.