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Finding the Fourth Proportional to 248.68, 343.62 and 190.96

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Solution

The fourth proportional to 248.68, 343.62 and 190.96 is: 263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.68 : 343.62 = 190.96 : x
  2. Step 2: Convert to fraction form
    248.68/343.62 = 190.96/x
  3. Step 3: Cross multiply
    248.68x = 343.62 × 190.96
  4. Step 4: Simplify right side
    248.68x = 65,617.68
  5. Step 5: Solve for x
    x = 65,617.68/248.68
  6. Step 6: Final answer
    x = 263.86

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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.