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Finding the Fourth Proportional to 796.50, 1,193.81 and 621.54

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Solution

The fourth proportional to 796.50, 1,193.81 and 621.54 is: 931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.50 : 1,193.81 = 621.54 : x
  2. Step 2: Convert to fraction form
    796.50/1,193.81 = 621.54/x
  3. Step 3: Cross multiply
    796.50x = 1,193.81 × 621.54
  4. Step 4: Simplify right side
    796.50x = 741,997.56
  5. Step 5: Solve for x
    x = 741,997.56/796.50
  6. Step 6: Final answer
    x = 931.57

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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.