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Finding the Fourth Proportional to 1,227.39, 1,841.26 and 447.28

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Solution

The fourth proportional to 1,227.39, 1,841.26 and 447.28 is: 670.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.39 : 1,841.26 = 447.28 : x
  2. Step 2: Convert to fraction form
    1,227.39/1,841.26 = 447.28/x
  3. Step 3: Cross multiply
    1,227.39x = 1,841.26 × 447.28
  4. Step 4: Simplify right side
    1,227.39x = 823,561.63
  5. Step 5: Solve for x
    x = 823,561.63/1,227.39
  6. Step 6: Final answer
    x = 670.98

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Double scale
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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.