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Finding the Fourth Proportional to 248.54, 374.19 and 219.81

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Solution

The fourth proportional to 248.54, 374.19 and 219.81 is: 330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.54 : 374.19 = 219.81 : x
  2. Step 2: Convert to fraction form
    248.54/374.19 = 219.81/x
  3. Step 3: Cross multiply
    248.54x = 374.19 × 219.81
  4. Step 4: Simplify right side
    248.54x = 82,250.70
  5. Step 5: Solve for x
    x = 82,250.70/248.54
  6. Step 6: Final answer
    x = 330.94

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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.