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Finding the Fourth Proportional to 445.44, 669.39 and 229.17

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Solution

The fourth proportional to 445.44, 669.39 and 229.17 is: 344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.44 : 669.39 = 229.17 : x
  2. Step 2: Convert to fraction form
    445.44/669.39 = 229.17/x
  3. Step 3: Cross multiply
    445.44x = 669.39 × 229.17
  4. Step 4: Simplify right side
    445.44x = 153,404.11
  5. Step 5: Solve for x
    x = 153,404.11/445.44
  6. Step 6: Final answer
    x = 344.39

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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.