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Finding the Fourth Proportional to 793.92, 1,190.28 and 307.38

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Solution

The fourth proportional to 793.92, 1,190.28 and 307.38 is: 460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.92 : 1,190.28 = 307.38 : x
  2. Step 2: Convert to fraction form
    793.92/1,190.28 = 307.38/x
  3. Step 3: Cross multiply
    793.92x = 1,190.28 × 307.38
  4. Step 4: Simplify right side
    793.92x = 365,868.27
  5. Step 5: Solve for x
    x = 365,868.27/793.92
  6. Step 6: Final answer
    x = 460.84

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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.