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Finding the Fourth Proportional to 789.93, 1,091.34 and 604.17

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Solution

The fourth proportional to 789.93, 1,091.34 and 604.17 is: 834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.93 : 1,091.34 = 604.17 : x
  2. Step 2: Convert to fraction form
    789.93/1,091.34 = 604.17/x
  3. Step 3: Cross multiply
    789.93x = 1,091.34 × 604.17
  4. Step 4: Simplify right side
    789.93x = 659,354.89
  5. Step 5: Solve for x
    x = 659,354.89/789.93
  6. Step 6: Final answer
    x = 834.70

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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.