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Finding the Fourth Proportional to 1,684.27, 2,525.32 and 806.75

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Solution

The fourth proportional to 1,684.27, 2,525.32 and 806.75 is: 1,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.27 : 2,525.32 = 806.75 : x
  2. Step 2: Convert to fraction form
    1,684.27/2,525.32 = 806.75/x
  3. Step 3: Cross multiply
    1,684.27x = 2,525.32 × 806.75
  4. Step 4: Simplify right side
    1,684.27x = 2,037,301.47
  5. Step 5: Solve for x
    x = 2,037,301.47/1,684.27
  6. Step 6: Final answer
    x = 1,209.61

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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.