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Finding the Fourth Proportional to 803.38, 1,107.02 and 616.86

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Solution

The fourth proportional to 803.38, 1,107.02 and 616.86 is: 850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.38 : 1,107.02 = 616.86 : x
  2. Step 2: Convert to fraction form
    803.38/1,107.02 = 616.86/x
  3. Step 3: Cross multiply
    803.38x = 1,107.02 × 616.86
  4. Step 4: Simplify right side
    803.38x = 682,876.36
  5. Step 5: Solve for x
    x = 682,876.36/803.38
  6. Step 6: Final answer
    x = 850.00

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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.