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Finding the Fourth Proportional to 83.09, 114.70 and 52

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Solution

The fourth proportional to 83.09, 114.70 and 52 is: 71.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.09 : 114.70 = 52 : x
  2. Step 2: Convert to fraction form
    83.09/114.70 = 52/x
  3. Step 3: Cross multiply
    83.09x = 114.70 × 52
  4. Step 4: Simplify right side
    83.09x = 5,964.14
  5. Step 5: Solve for x
    x = 5,964.14/83.09
  6. Step 6: Final answer
    x = 71.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.