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Finding the Fourth Proportional to 224.30, 338.15 and 208.64

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Solution

The fourth proportional to 224.30, 338.15 and 208.64 is: 314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.30 : 338.15 = 208.64 : x
  2. Step 2: Convert to fraction form
    224.30/338.15 = 208.64/x
  3. Step 3: Cross multiply
    224.30x = 338.15 × 208.64
  4. Step 4: Simplify right side
    224.30x = 70,551.62
  5. Step 5: Solve for x
    x = 70,551.62/224.30
  6. Step 6: Final answer
    x = 314.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.