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Finding the Fourth Proportional to 248.36, 372.41 and 74.98

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Solution

The fourth proportional to 248.36, 372.41 and 74.98 is: 112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.36 : 372.41 = 74.98 : x
  2. Step 2: Convert to fraction form
    248.36/372.41 = 74.98/x
  3. Step 3: Cross multiply
    248.36x = 372.41 × 74.98
  4. Step 4: Simplify right side
    248.36x = 27,921.44
  5. Step 5: Solve for x
    x = 27,921.44/248.36
  6. Step 6: Final answer
    x = 112.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.