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Finding the Fourth Proportional to 793.38, 1,093.82 and 513.12

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Solution

The fourth proportional to 793.38, 1,093.82 and 513.12 is: 707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.38 : 1,093.82 = 513.12 : x
  2. Step 2: Convert to fraction form
    793.38/1,093.82 = 513.12/x
  3. Step 3: Cross multiply
    793.38x = 1,093.82 × 513.12
  4. Step 4: Simplify right side
    793.38x = 561,260.92
  5. Step 5: Solve for x
    x = 561,260.92/793.38
  6. Step 6: Final answer
    x = 707.43

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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.