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Finding the Fourth Proportional to 248.20, 372.32 and 218.14

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Solution

The fourth proportional to 248.20, 372.32 and 218.14 is: 327.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.20 : 372.32 = 218.14 : x
  2. Step 2: Convert to fraction form
    248.20/372.32 = 218.14/x
  3. Step 3: Cross multiply
    248.20x = 372.32 × 218.14
  4. Step 4: Simplify right side
    248.20x = 81,217.88
  5. Step 5: Solve for x
    x = 81,217.88/248.20
  6. Step 6: Final answer
    x = 327.23

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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.