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Finding the Fourth Proportional to 1,976.76, 2,965.14 and 516.02

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Solution

The fourth proportional to 1,976.76, 2,965.14 and 516.02 is: 774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.76 : 2,965.14 = 516.02 : x
  2. Step 2: Convert to fraction form
    1,976.76/2,965.14 = 516.02/x
  3. Step 3: Cross multiply
    1,976.76x = 2,965.14 × 516.02
  4. Step 4: Simplify right side
    1,976.76x = 1,530,071.54
  5. Step 5: Solve for x
    x = 1,530,071.54/1,976.76
  6. Step 6: Final answer
    x = 774.03

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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.