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Finding the Fourth Proportional to 224.23, 308.96 and 209.18

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Solution

The fourth proportional to 224.23, 308.96 and 209.18 is: 288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.23 : 308.96 = 209.18 : x
  2. Step 2: Convert to fraction form
    224.23/308.96 = 209.18/x
  3. Step 3: Cross multiply
    224.23x = 308.96 × 209.18
  4. Step 4: Simplify right side
    224.23x = 64,628.25
  5. Step 5: Solve for x
    x = 64,628.25/224.23
  6. Step 6: Final answer
    x = 288.22

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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.