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Finding the Fourth Proportional to 84.05, 116.51 and 82.37

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Solution

The fourth proportional to 84.05, 116.51 and 82.37 is: 114.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.05 : 116.51 = 82.37 : x
  2. Step 2: Convert to fraction form
    84.05/116.51 = 82.37/x
  3. Step 3: Cross multiply
    84.05x = 116.51 × 82.37
  4. Step 4: Simplify right side
    84.05x = 9,597.43
  5. Step 5: Solve for x
    x = 9,597.43/84.05
  6. Step 6: Final answer
    x = 114.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.