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Finding the Fourth Proportional to 1,226.90, 1,841.16 and 610.48

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Solution

The fourth proportional to 1,226.90, 1,841.16 and 610.48 is: 916.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.90 : 1,841.16 = 610.48 : x
  2. Step 2: Convert to fraction form
    1,226.90/1,841.16 = 610.48/x
  3. Step 3: Cross multiply
    1,226.90x = 1,841.16 × 610.48
  4. Step 4: Simplify right side
    1,226.90x = 1,123,991.36
  5. Step 5: Solve for x
    x = 1,123,991.36/1,226.90
  6. Step 6: Final answer
    x = 916.12

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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.