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Finding the Fourth Proportional to 447.76, 668.26 and 382.96

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Solution

The fourth proportional to 447.76, 668.26 and 382.96 is: 571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.76 : 668.26 = 382.96 : x
  2. Step 2: Convert to fraction form
    447.76/668.26 = 382.96/x
  3. Step 3: Cross multiply
    447.76x = 668.26 × 382.96
  4. Step 4: Simplify right side
    447.76x = 255,916.85
  5. Step 5: Solve for x
    x = 255,916.85/447.76
  6. Step 6: Final answer
    x = 571.55

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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.