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Finding the Fourth Proportional to 248.96, 371.40 and 225.74

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Solution

The fourth proportional to 248.96, 371.40 and 225.74 is: 336.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.96 : 371.40 = 225.74 : x
  2. Step 2: Convert to fraction form
    248.96/371.40 = 225.74/x
  3. Step 3: Cross multiply
    248.96x = 371.40 × 225.74
  4. Step 4: Simplify right side
    248.96x = 83,839.84
  5. Step 5: Solve for x
    x = 83,839.84/248.96
  6. Step 6: Final answer
    x = 336.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.