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Finding the Fourth Proportional to 225.78, 338.05 and 144.37

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Solution

The fourth proportional to 225.78, 338.05 and 144.37 is: 216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.78 : 338.05 = 144.37 : x
  2. Step 2: Convert to fraction form
    225.78/338.05 = 144.37/x
  3. Step 3: Cross multiply
    225.78x = 338.05 × 144.37
  4. Step 4: Simplify right side
    225.78x = 48,804.28
  5. Step 5: Solve for x
    x = 48,804.28/225.78
  6. Step 6: Final answer
    x = 216.16

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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.