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Finding the Fourth Proportional to 797.50, 1,196.25 and 220.38

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Solution

The fourth proportional to 797.50, 1,196.25 and 220.38 is: 330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.50 : 1,196.25 = 220.38 : x
  2. Step 2: Convert to fraction form
    797.50/1,196.25 = 220.38/x
  3. Step 3: Cross multiply
    797.50x = 1,196.25 × 220.38
  4. Step 4: Simplify right side
    797.50x = 263,623.59
  5. Step 5: Solve for x
    x = 263,623.59/797.50
  6. Step 6: Final answer
    x = 330.56

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Double scale
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Similar ratio
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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.