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Finding the Fourth Proportional to 1,612.33, 2,418.78 and 516.44

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Solution

The fourth proportional to 1,612.33, 2,418.78 and 516.44 is: 774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.33 : 2,418.78 = 516.44 : x
  2. Step 2: Convert to fraction form
    1,612.33/2,418.78 = 516.44/x
  3. Step 3: Cross multiply
    1,612.33x = 2,418.78 × 516.44
  4. Step 4: Simplify right side
    1,612.33x = 1,249,154.74
  5. Step 5: Solve for x
    x = 1,249,154.74/1,612.33
  6. Step 6: Final answer
    x = 774.75

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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.