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Finding the Fourth Proportional to 516.15, 774.52 and 400.10

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Solution

The fourth proportional to 516.15, 774.52 and 400.10 is: 600.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.15 : 774.52 = 400.10 : x
  2. Step 2: Convert to fraction form
    516.15/774.52 = 400.10/x
  3. Step 3: Cross multiply
    516.15x = 774.52 × 400.10
  4. Step 4: Simplify right side
    516.15x = 309,880.58
  5. Step 5: Solve for x
    x = 309,880.58/516.15
  6. Step 6: Final answer
    x = 600.37

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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.