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Finding the Fourth Proportional to 223.05, 336.24 and 208.18

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Solution

The fourth proportional to 223.05, 336.24 and 208.18 is: 313.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.05 : 336.24 = 208.18 : x
  2. Step 2: Convert to fraction form
    223.05/336.24 = 208.18/x
  3. Step 3: Cross multiply
    223.05x = 336.24 × 208.18
  4. Step 4: Simplify right side
    223.05x = 69,998.44
  5. Step 5: Solve for x
    x = 69,998.44/223.05
  6. Step 6: Final answer
    x = 313.82

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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.