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Finding the Fourth Proportional to 248.67, 342.23 and 222.75

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Solution

The fourth proportional to 248.67, 342.23 and 222.75 is: 306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.67 : 342.23 = 222.75 : x
  2. Step 2: Convert to fraction form
    248.67/342.23 = 222.75/x
  3. Step 3: Cross multiply
    248.67x = 342.23 × 222.75
  4. Step 4: Simplify right side
    248.67x = 76,230.62
  5. Step 5: Solve for x
    x = 76,230.62/248.67
  6. Step 6: Final answer
    x = 306.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.