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Finding the Fourth Proportional to 833.49, 1,150.81 and 677.97

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Solution

The fourth proportional to 833.49, 1,150.81 and 677.97 is: 936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.49 : 1,150.81 = 677.97 : x
  2. Step 2: Convert to fraction form
    833.49/1,150.81 = 677.97/x
  3. Step 3: Cross multiply
    833.49x = 1,150.81 × 677.97
  4. Step 4: Simplify right side
    833.49x = 780,212.96
  5. Step 5: Solve for x
    x = 780,212.96/833.49
  6. Step 6: Final answer
    x = 936.08

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1.5x scale

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.