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Finding the Fourth Proportional to 83.67, 114.67 and 83.53

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Solution

The fourth proportional to 83.67, 114.67 and 83.53 is: 114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.67 : 114.67 = 83.53 : x
  2. Step 2: Convert to fraction form
    83.67/114.67 = 83.53/x
  3. Step 3: Cross multiply
    83.67x = 114.67 × 83.53
  4. Step 4: Simplify right side
    83.67x = 9,578.39
  5. Step 5: Solve for x
    x = 9,578.39/83.67
  6. Step 6: Final answer
    x = 114.48

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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.