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Finding the Fourth Proportional to 1,806.55, 2,709.82 and 766.28

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Solution

The fourth proportional to 1,806.55, 2,709.82 and 766.28 is: 1,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.55 : 2,709.82 = 766.28 : x
  2. Step 2: Convert to fraction form
    1,806.55/2,709.82 = 766.28/x
  3. Step 3: Cross multiply
    1,806.55x = 2,709.82 × 766.28
  4. Step 4: Simplify right side
    1,806.55x = 2,076,480.87
  5. Step 5: Solve for x
    x = 2,076,480.87/1,806.55
  6. Step 6: Final answer
    x = 1,149.42

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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.