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Finding the Fourth Proportional to 1,226.60, 1,840.25 and 496.70

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Solution

The fourth proportional to 1,226.60, 1,840.25 and 496.70 is: 745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.60 : 1,840.25 = 496.70 : x
  2. Step 2: Convert to fraction form
    1,226.60/1,840.25 = 496.70/x
  3. Step 3: Cross multiply
    1,226.60x = 1,840.25 × 496.70
  4. Step 4: Simplify right side
    1,226.60x = 914,044.22
  5. Step 5: Solve for x
    x = 914,044.22/1,226.60
  6. Step 6: Final answer
    x = 745.19

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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.