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Finding the Fourth Proportional to 447.84, 667.85 and 443.75

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Solution

The fourth proportional to 447.84, 667.85 and 443.75 is: 661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.84 : 667.85 = 443.75 : x
  2. Step 2: Convert to fraction form
    447.84/667.85 = 443.75/x
  3. Step 3: Cross multiply
    447.84x = 667.85 × 443.75
  4. Step 4: Simplify right side
    447.84x = 296,352.88
  5. Step 5: Solve for x
    x = 296,352.88/447.84
  6. Step 6: Final answer
    x = 661.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.