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Finding the Fourth Proportional to 1,671.08, 2,506.86 and 516.56

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Solution

The fourth proportional to 1,671.08, 2,506.86 and 516.56 is: 774.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.08 : 2,506.86 = 516.56 : x
  2. Step 2: Convert to fraction form
    1,671.08/2,506.86 = 516.56/x
  3. Step 3: Cross multiply
    1,671.08x = 2,506.86 × 516.56
  4. Step 4: Simplify right side
    1,671.08x = 1,294,943.60
  5. Step 5: Solve for x
    x = 1,294,943.60/1,671.08
  6. Step 6: Final answer
    x = 774.91

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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.