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Finding the Fourth Proportional to 322.23, 444.87 and 248.40

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Solution

The fourth proportional to 322.23, 444.87 and 248.40 is: 342.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.23 : 444.87 = 248.40 : x
  2. Step 2: Convert to fraction form
    322.23/444.87 = 248.40/x
  3. Step 3: Cross multiply
    322.23x = 444.87 × 248.40
  4. Step 4: Simplify right side
    322.23x = 110,505.71
  5. Step 5: Solve for x
    x = 110,505.71/322.23
  6. Step 6: Final answer
    x = 342.94

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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.