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Finding the Fourth Proportional to 248.44, 343.26 and 190.66

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Solution

The fourth proportional to 248.44, 343.26 and 190.66 is: 263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.44 : 343.26 = 190.66 : x
  2. Step 2: Convert to fraction form
    248.44/343.26 = 190.66/x
  3. Step 3: Cross multiply
    248.44x = 343.26 × 190.66
  4. Step 4: Simplify right side
    248.44x = 65,445.95
  5. Step 5: Solve for x
    x = 65,445.95/248.44
  6. Step 6: Final answer
    x = 263.43

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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.