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Finding the Fourth Proportional to 447.23, 670.22 and 349.29

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Solution

The fourth proportional to 447.23, 670.22 and 349.29 is: 523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.23 : 670.22 = 349.29 : x
  2. Step 2: Convert to fraction form
    447.23/670.22 = 349.29/x
  3. Step 3: Cross multiply
    447.23x = 670.22 × 349.29
  4. Step 4: Simplify right side
    447.23x = 234,099.40
  5. Step 5: Solve for x
    x = 234,099.40/447.23
  6. Step 6: Final answer
    x = 523.45

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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.