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Finding the Fourth Proportional to 793.42, 1,190.82 and 383.36

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Solution

The fourth proportional to 793.42, 1,190.82 and 383.36 is: 575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.42 : 1,190.82 = 383.36 : x
  2. Step 2: Convert to fraction form
    793.42/1,190.82 = 383.36/x
  3. Step 3: Cross multiply
    793.42x = 1,190.82 × 383.36
  4. Step 4: Simplify right side
    793.42x = 456,512.76
  5. Step 5: Solve for x
    x = 456,512.76/793.42
  6. Step 6: Final answer
    x = 575.37

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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.