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Finding the Fourth Proportional to 297.24, 446.09 and 220.38

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Solution

The fourth proportional to 297.24, 446.09 and 220.38 is: 330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.24 : 446.09 = 220.38 : x
  2. Step 2: Convert to fraction form
    297.24/446.09 = 220.38/x
  3. Step 3: Cross multiply
    297.24x = 446.09 × 220.38
  4. Step 4: Simplify right side
    297.24x = 98,308.21
  5. Step 5: Solve for x
    x = 98,308.21/297.24
  6. Step 6: Final answer
    x = 330.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.