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Finding the Fourth Proportional to 451.26, 676.44 and 220.14

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Solution

The fourth proportional to 451.26, 676.44 and 220.14 is: 329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.26 : 676.44 = 220.14 : x
  2. Step 2: Convert to fraction form
    451.26/676.44 = 220.14/x
  3. Step 3: Cross multiply
    451.26x = 676.44 × 220.14
  4. Step 4: Simplify right side
    451.26x = 148,911.50
  5. Step 5: Solve for x
    x = 148,911.50/451.26
  6. Step 6: Final answer
    x = 329.99

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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.