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Finding the Fourth Proportional to 80.14, 110.30 and 68.44

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Solution

The fourth proportional to 80.14, 110.30 and 68.44 is: 94.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.14 : 110.30 = 68.44 : x
  2. Step 2: Convert to fraction form
    80.14/110.30 = 68.44/x
  3. Step 3: Cross multiply
    80.14x = 110.30 × 68.44
  4. Step 4: Simplify right side
    80.14x = 7,548.98
  5. Step 5: Solve for x
    x = 7,548.98/80.14
  6. Step 6: Final answer
    x = 94.20

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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.