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Finding the Fourth Proportional to 447.44, 670.60 and 338.92

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Solution

The fourth proportional to 447.44, 670.60 and 338.92 is: 507.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.44 : 670.60 = 338.92 : x
  2. Step 2: Convert to fraction form
    447.44/670.60 = 338.92/x
  3. Step 3: Cross multiply
    447.44x = 670.60 × 338.92
  4. Step 4: Simplify right side
    447.44x = 227,279.75
  5. Step 5: Solve for x
    x = 227,279.75/447.44
  6. Step 6: Final answer
    x = 507.96

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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.