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Finding the Fourth Proportional to 516.28, 772.94 and 400.12

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Solution

The fourth proportional to 516.28, 772.94 and 400.12 is: 599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.28 : 772.94 = 400.12 : x
  2. Step 2: Convert to fraction form
    516.28/772.94 = 400.12/x
  3. Step 3: Cross multiply
    516.28x = 772.94 × 400.12
  4. Step 4: Simplify right side
    516.28x = 309,268.75
  5. Step 5: Solve for x
    x = 309,268.75/516.28
  6. Step 6: Final answer
    x = 599.03

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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.