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Finding the Fourth Proportional to 363.21, 501.30 and 223.40

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Solution

The fourth proportional to 363.21, 501.30 and 223.40 is: 308.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.21 : 501.30 = 223.40 : x
  2. Step 2: Convert to fraction form
    363.21/501.30 = 223.40/x
  3. Step 3: Cross multiply
    363.21x = 501.30 × 223.40
  4. Step 4: Simplify right side
    363.21x = 111,987.91
  5. Step 5: Solve for x
    x = 111,987.91/363.21
  6. Step 6: Final answer
    x = 308.33

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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.