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Finding the Fourth Proportional to 225.79, 338.60 and 88.81

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Solution

The fourth proportional to 225.79, 338.60 and 88.81 is: 133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.79 : 338.60 = 88.81 : x
  2. Step 2: Convert to fraction form
    225.79/338.60 = 88.81/x
  3. Step 3: Cross multiply
    225.79x = 338.60 × 88.81
  4. Step 4: Simplify right side
    225.79x = 30,070.44
  5. Step 5: Solve for x
    x = 30,070.44/225.79
  6. Step 6: Final answer
    x = 133.18

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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.