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Finding the Fourth Proportional to 249.72, 376.96 and 248.28

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Solution

The fourth proportional to 249.72, 376.96 and 248.28 is: 374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.72 : 376.96 = 248.28 : x
  2. Step 2: Convert to fraction form
    249.72/376.96 = 248.28/x
  3. Step 3: Cross multiply
    249.72x = 376.96 × 248.28
  4. Step 4: Simplify right side
    249.72x = 93,591.63
  5. Step 5: Solve for x
    x = 93,591.63/249.72
  6. Step 6: Final answer
    x = 374.79

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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.