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Finding the Fourth Proportional to 322.29, 444.78 and 248.58

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Solution

The fourth proportional to 322.29, 444.78 and 248.58 is: 343.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.29 : 444.78 = 248.58 : x
  2. Step 2: Convert to fraction form
    322.29/444.78 = 248.58/x
  3. Step 3: Cross multiply
    322.29x = 444.78 × 248.58
  4. Step 4: Simplify right side
    322.29x = 110,563.41
  5. Step 5: Solve for x
    x = 110,563.41/322.29
  6. Step 6: Final answer
    x = 343.06

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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.