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Finding the Fourth Proportional to 1,612.52, 2,419.18 and 516.99

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Solution

The fourth proportional to 1,612.52, 2,419.18 and 516.99 is: 775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.52 : 2,419.18 = 516.99 : x
  2. Step 2: Convert to fraction form
    1,612.52/2,419.18 = 516.99/x
  3. Step 3: Cross multiply
    1,612.52x = 2,419.18 × 516.99
  4. Step 4: Simplify right side
    1,612.52x = 1,250,690.58
  5. Step 5: Solve for x
    x = 1,250,690.58/1,612.52
  6. Step 6: Final answer
    x = 775.61

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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.