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Finding the Fourth Proportional to 1,542.95, 2,314.41 and 516.95

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Solution

The fourth proportional to 1,542.95, 2,314.41 and 516.95 is: 775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.95 : 2,314.41 = 516.95 : x
  2. Step 2: Convert to fraction form
    1,542.95/2,314.41 = 516.95/x
  3. Step 3: Cross multiply
    1,542.95x = 2,314.41 × 516.95
  4. Step 4: Simplify right side
    1,542.95x = 1,196,422.68
  5. Step 5: Solve for x
    x = 1,196,422.68/1,542.95
  6. Step 6: Final answer
    x = 775.41

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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.