Home / 1,285.48-1,928.22-516.52

Finding the Fourth Proportional to 1,285.48, 1,928.22 and 516.52

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Solution

The fourth proportional to 1,285.48, 1,928.22 and 516.52 is: 774.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.48 : 1,928.22 = 516.52 : x
  2. Step 2: Convert to fraction form
    1,285.48/1,928.22 = 516.52/x
  3. Step 3: Cross multiply
    1,285.48x = 1,928.22 × 516.52
  4. Step 4: Simplify right side
    1,285.48x = 995,964.19
  5. Step 5: Solve for x
    x = 995,964.19/1,285.48
  6. Step 6: Final answer
    x = 774.78

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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.