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Finding the Fourth Proportional to 83.84, 114.69 and 83.62

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Solution

The fourth proportional to 83.84, 114.69 and 83.62 is: 114.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.84 : 114.69 = 83.62 : x
  2. Step 2: Convert to fraction form
    83.84/114.69 = 83.62/x
  3. Step 3: Cross multiply
    83.84x = 114.69 × 83.62
  4. Step 4: Simplify right side
    83.84x = 9,590.38
  5. Step 5: Solve for x
    x = 9,590.38/83.84
  6. Step 6: Final answer
    x = 114.39

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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.