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Finding the Fourth Proportional to 833.08, 1,149.78 and 611.92

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Solution

The fourth proportional to 833.08, 1,149.78 and 611.92 is: 844.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.08 : 1,149.78 = 611.92 : x
  2. Step 2: Convert to fraction form
    833.08/1,149.78 = 611.92/x
  3. Step 3: Cross multiply
    833.08x = 1,149.78 × 611.92
  4. Step 4: Simplify right side
    833.08x = 703,573.38
  5. Step 5: Solve for x
    x = 703,573.38/833.08
  6. Step 6: Final answer
    x = 844.54

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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.