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Finding the Fourth Proportional to 793.54, 1,091.82 and 775.14

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Solution

The fourth proportional to 793.54, 1,091.82 and 775.14 is: 1,066.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.54 : 1,091.82 = 775.14 : x
  2. Step 2: Convert to fraction form
    793.54/1,091.82 = 775.14/x
  3. Step 3: Cross multiply
    793.54x = 1,091.82 × 775.14
  4. Step 4: Simplify right side
    793.54x = 846,313.35
  5. Step 5: Solve for x
    x = 846,313.35/793.54
  6. Step 6: Final answer
    x = 1,066.50

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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.