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Finding the Fourth Proportional to 268.18, 404.11 and 223.54

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Solution

The fourth proportional to 268.18, 404.11 and 223.54 is: 336.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.18 : 404.11 = 223.54 : x
  2. Step 2: Convert to fraction form
    268.18/404.11 = 223.54/x
  3. Step 3: Cross multiply
    268.18x = 404.11 × 223.54
  4. Step 4: Simplify right side
    268.18x = 90,334.75
  5. Step 5: Solve for x
    x = 90,334.75/268.18
  6. Step 6: Final answer
    x = 336.84

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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.