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Finding the Fourth Proportional to 223.20, 336.47 and 208.33

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Solution

The fourth proportional to 223.20, 336.47 and 208.33 is: 314.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.20 : 336.47 = 208.33 : x
  2. Step 2: Convert to fraction form
    223.20/336.47 = 208.33/x
  3. Step 3: Cross multiply
    223.20x = 336.47 × 208.33
  4. Step 4: Simplify right side
    223.20x = 70,096.80
  5. Step 5: Solve for x
    x = 70,096.80/223.20
  6. Step 6: Final answer
    x = 314.05

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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.