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Finding the Fourth Proportional to 911.75, 1,367.63 and 227.75

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Solution

The fourth proportional to 911.75, 1,367.63 and 227.75 is: 341.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.75 : 1,367.63 = 227.75 : x
  2. Step 2: Convert to fraction form
    911.75/1,367.63 = 227.75/x
  3. Step 3: Cross multiply
    911.75x = 1,367.63 × 227.75
  4. Step 4: Simplify right side
    911.75x = 311,476.59
  5. Step 5: Solve for x
    x = 311,476.59/911.75
  6. Step 6: Final answer
    x = 341.63

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.