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Finding the Fourth Proportional to 797.80, 1,196.10 and 335.20

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Solution

The fourth proportional to 797.80, 1,196.10 and 335.20 is: 502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.80 : 1,196.10 = 335.20 : x
  2. Step 2: Convert to fraction form
    797.80/1,196.10 = 335.20/x
  3. Step 3: Cross multiply
    797.80x = 1,196.10 × 335.20
  4. Step 4: Simplify right side
    797.80x = 400,932.72
  5. Step 5: Solve for x
    x = 400,932.72/797.80
  6. Step 6: Final answer
    x = 502.55

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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.