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Finding the Fourth Proportional to 248.92, 375.20 and 243.40

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Solution

The fourth proportional to 248.92, 375.20 and 243.40 is: 366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.92 : 375.20 = 243.40 : x
  2. Step 2: Convert to fraction form
    248.92/375.20 = 243.40/x
  3. Step 3: Cross multiply
    248.92x = 375.20 × 243.40
  4. Step 4: Simplify right side
    248.92x = 91,323.68
  5. Step 5: Solve for x
    x = 91,323.68/248.92
  6. Step 6: Final answer
    x = 366.88

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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.