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Finding the Fourth Proportional to 224.10, 309.33 and 208.73

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Solution

The fourth proportional to 224.10, 309.33 and 208.73 is: 288.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.10 : 309.33 = 208.73 : x
  2. Step 2: Convert to fraction form
    224.10/309.33 = 208.73/x
  3. Step 3: Cross multiply
    224.10x = 309.33 × 208.73
  4. Step 4: Simplify right side
    224.10x = 64,567.22
  5. Step 5: Solve for x
    x = 64,567.22/224.10
  6. Step 6: Final answer
    x = 288.12

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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.