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Finding the Fourth Proportional to 1,227.15, 1,840.95 and 496.80

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Solution

The fourth proportional to 1,227.15, 1,840.95 and 496.80 is: 745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.15 : 1,840.95 = 496.80 : x
  2. Step 2: Convert to fraction form
    1,227.15/1,840.95 = 496.80/x
  3. Step 3: Cross multiply
    1,227.15x = 1,840.95 × 496.80
  4. Step 4: Simplify right side
    1,227.15x = 914,583.96
  5. Step 5: Solve for x
    x = 914,583.96/1,227.15
  6. Step 6: Final answer
    x = 745.29

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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.