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Finding the Fourth Proportional to 381.14, 525.75 and 223.73

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Solution

The fourth proportional to 381.14, 525.75 and 223.73 is: 308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.14 : 525.75 = 223.73 : x
  2. Step 2: Convert to fraction form
    381.14/525.75 = 223.73/x
  3. Step 3: Cross multiply
    381.14x = 525.75 × 223.73
  4. Step 4: Simplify right side
    381.14x = 117,627.36
  5. Step 5: Solve for x
    x = 117,627.36/381.14
  6. Step 6: Final answer
    x = 308.62

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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.