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Finding the Fourth Proportional to 797.94, 1,197.32 and 329.76

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Solution

The fourth proportional to 797.94, 1,197.32 and 329.76 is: 494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.94 : 1,197.32 = 329.76 : x
  2. Step 2: Convert to fraction form
    797.94/1,197.32 = 329.76/x
  3. Step 3: Cross multiply
    797.94x = 1,197.32 × 329.76
  4. Step 4: Simplify right side
    797.94x = 394,828.24
  5. Step 5: Solve for x
    x = 394,828.24/797.94
  6. Step 6: Final answer
    x = 494.81

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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.