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Finding the Fourth Proportional to 219.39, 330.57 and 181.71

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Solution

The fourth proportional to 219.39, 330.57 and 181.71 is: 273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.39 : 330.57 = 181.71 : x
  2. Step 2: Convert to fraction form
    219.39/330.57 = 181.71/x
  3. Step 3: Cross multiply
    219.39x = 330.57 × 181.71
  4. Step 4: Simplify right side
    219.39x = 60,067.87
  5. Step 5: Solve for x
    x = 60,067.87/219.39
  6. Step 6: Final answer
    x = 273.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.