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Finding the Fourth Proportional to 322.24, 444.78 and 223.96

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Solution

The fourth proportional to 322.24, 444.78 and 223.96 is: 309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.24 : 444.78 = 223.96 : x
  2. Step 2: Convert to fraction form
    322.24/444.78 = 223.96/x
  3. Step 3: Cross multiply
    322.24x = 444.78 × 223.96
  4. Step 4: Simplify right side
    322.24x = 99,612.93
  5. Step 5: Solve for x
    x = 99,612.93/322.24
  6. Step 6: Final answer
    x = 309.13

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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.