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Finding the Fourth Proportional to 251.06, 347.21 and 248.33

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Solution

The fourth proportional to 251.06, 347.21 and 248.33 is: 343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.06 : 347.21 = 248.33 : x
  2. Step 2: Convert to fraction form
    251.06/347.21 = 248.33/x
  3. Step 3: Cross multiply
    251.06x = 347.21 × 248.33
  4. Step 4: Simplify right side
    251.06x = 86,219.68
  5. Step 5: Solve for x
    x = 86,219.68/251.06
  6. Step 6: Final answer
    x = 343.43

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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.