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Finding the Fourth Proportional to 797.95, 1,196.79 and 220.69

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Solution

The fourth proportional to 797.95, 1,196.79 and 220.69 is: 330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.95 : 1,196.79 = 220.69 : x
  2. Step 2: Convert to fraction form
    797.95/1,196.79 = 220.69/x
  3. Step 3: Cross multiply
    797.95x = 1,196.79 × 220.69
  4. Step 4: Simplify right side
    797.95x = 264,115.77
  5. Step 5: Solve for x
    x = 264,115.77/797.95
  6. Step 6: Final answer
    x = 330.99

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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.