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Finding the Fourth Proportional to 789.83, 1,091.42 and 602.99

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Solution

The fourth proportional to 789.83, 1,091.42 and 602.99 is: 833.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.83 : 1,091.42 = 602.99 : x
  2. Step 2: Convert to fraction form
    789.83/1,091.42 = 602.99/x
  3. Step 3: Cross multiply
    789.83x = 1,091.42 × 602.99
  4. Step 4: Simplify right side
    789.83x = 658,106.87
  5. Step 5: Solve for x
    x = 658,106.87/789.83
  6. Step 6: Final answer
    x = 833.23

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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.