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Finding the Fourth Proportional to 677, 1,020.83 and 550.28

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Solution

The fourth proportional to 677, 1,020.83 and 550.28 is: 829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    677 : 1,020.83 = 550.28 : x
  2. Step 2: Convert to fraction form
    677/1,020.83 = 550.28/x
  3. Step 3: Cross multiply
    677x = 1,020.83 × 550.28
  4. Step 4: Simplify right side
    677x = 561,742.33
  5. Step 5: Solve for x
    x = 561,742.33/677
  6. Step 6: Final answer
    x = 829.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.