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Finding the Fourth Proportional to 363.55, 501.45 and 223.75

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Solution

The fourth proportional to 363.55, 501.45 and 223.75 is: 308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.55 : 501.45 = 223.75 : x
  2. Step 2: Convert to fraction form
    363.55/501.45 = 223.75/x
  3. Step 3: Cross multiply
    363.55x = 501.45 × 223.75
  4. Step 4: Simplify right side
    363.55x = 112,198.13
  5. Step 5: Solve for x
    x = 112,198.13/363.55
  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.