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Finding the Fourth Proportional to 793.29, 1,091.49 and 774.87

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Solution

The fourth proportional to 793.29, 1,091.49 and 774.87 is: 1,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.29 : 1,091.49 = 774.87 : x
  2. Step 2: Convert to fraction form
    793.29/1,091.49 = 774.87/x
  3. Step 3: Cross multiply
    793.29x = 1,091.49 × 774.87
  4. Step 4: Simplify right side
    793.29x = 845,762.86
  5. Step 5: Solve for x
    x = 845,762.86/793.29
  6. Step 6: Final answer
    x = 1,066.15

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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.