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Finding the Fourth Proportional to 80.26, 120.22 and 75.08

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Solution

The fourth proportional to 80.26, 120.22 and 75.08 is: 112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.26 : 120.22 = 75.08 : x
  2. Step 2: Convert to fraction form
    80.26/120.22 = 75.08/x
  3. Step 3: Cross multiply
    80.26x = 120.22 × 75.08
  4. Step 4: Simplify right side
    80.26x = 9,026.23
  5. Step 5: Solve for x
    x = 9,026.23/80.26
  6. Step 6: Final answer
    x = 112.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.