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Finding the Fourth Proportional to 80.44, 110.99 and 60.77

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Solution

The fourth proportional to 80.44, 110.99 and 60.77 is: 83.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.44 : 110.99 = 60.77 : x
  2. Step 2: Convert to fraction form
    80.44/110.99 = 60.77/x
  3. Step 3: Cross multiply
    80.44x = 110.99 × 60.77
  4. Step 4: Simplify right side
    80.44x = 6,744.33
  5. Step 5: Solve for x
    x = 6,744.33/80.44
  6. Step 6: Final answer
    x = 83.84

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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.