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Finding the Fourth Proportional to 793.62, 1,188.99 and 776.34

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Solution

The fourth proportional to 793.62, 1,188.99 and 776.34 is: 1,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.62 : 1,188.99 = 776.34 : x
  2. Step 2: Convert to fraction form
    793.62/1,188.99 = 776.34/x
  3. Step 3: Cross multiply
    793.62x = 1,188.99 × 776.34
  4. Step 4: Simplify right side
    793.62x = 923,060.50
  5. Step 5: Solve for x
    x = 923,060.50/793.62
  6. Step 6: Final answer
    x = 1,163.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.