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Finding the Fourth Proportional to 1,469.79, 2,028.43 and 806.77

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Solution

The fourth proportional to 1,469.79, 2,028.43 and 806.77 is: 1,113.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.79 : 2,028.43 = 806.77 : x
  2. Step 2: Convert to fraction form
    1,469.79/2,028.43 = 806.77/x
  3. Step 3: Cross multiply
    1,469.79x = 2,028.43 × 806.77
  4. Step 4: Simplify right side
    1,469.79x = 1,636,480.02
  5. Step 5: Solve for x
    x = 1,636,480.02/1,469.79
  6. Step 6: Final answer
    x = 1,113.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.