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Finding the Fourth Proportional to 808.33, 1,213.11 and 574.05

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Solution

The fourth proportional to 808.33, 1,213.11 and 574.05 is: 861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.33 : 1,213.11 = 574.05 : x
  2. Step 2: Convert to fraction form
    808.33/1,213.11 = 574.05/x
  3. Step 3: Cross multiply
    808.33x = 1,213.11 × 574.05
  4. Step 4: Simplify right side
    808.33x = 696,385.80
  5. Step 5: Solve for x
    x = 696,385.80/808.33
  6. Step 6: Final answer
    x = 861.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.