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Finding the Fourth Proportional to 793.73, 1,190.70 and 245.81

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Solution

The fourth proportional to 793.73, 1,190.70 and 245.81 is: 368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.73 : 1,190.70 = 245.81 : x
  2. Step 2: Convert to fraction form
    793.73/1,190.70 = 245.81/x
  3. Step 3: Cross multiply
    793.73x = 1,190.70 × 245.81
  4. Step 4: Simplify right side
    793.73x = 292,680.01
  5. Step 5: Solve for x
    x = 292,680.01/793.73
  6. Step 6: Final answer
    x = 368.74

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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.