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Finding the Fourth Proportional to 89.24, 122.08 and 88.88

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Solution

The fourth proportional to 89.24, 122.08 and 88.88 is: 121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.24 : 122.08 = 88.88 : x
  2. Step 2: Convert to fraction form
    89.24/122.08 = 88.88/x
  3. Step 3: Cross multiply
    89.24x = 122.08 × 88.88
  4. Step 4: Simplify right side
    89.24x = 10,850.47
  5. Step 5: Solve for x
    x = 10,850.47/89.24
  6. Step 6: Final answer
    x = 121.59

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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.