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Finding the Fourth Proportional to 516.69, 773.33 and 445.41

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Solution

The fourth proportional to 516.69, 773.33 and 445.41 is: 666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.69 : 773.33 = 445.41 : x
  2. Step 2: Convert to fraction form
    516.69/773.33 = 445.41/x
  3. Step 3: Cross multiply
    516.69x = 773.33 × 445.41
  4. Step 4: Simplify right side
    516.69x = 344,446.69
  5. Step 5: Solve for x
    x = 344,446.69/516.69
  6. Step 6: Final answer
    x = 666.64

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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.