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Finding the Fourth Proportional to 1,226.72, 1,840.88 and 577.44

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Solution

The fourth proportional to 1,226.72, 1,840.88 and 577.44 is: 866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.72 : 1,840.88 = 577.44 : x
  2. Step 2: Convert to fraction form
    1,226.72/1,840.88 = 577.44/x
  3. Step 3: Cross multiply
    1,226.72x = 1,840.88 × 577.44
  4. Step 4: Simplify right side
    1,226.72x = 1,062,997.75
  5. Step 5: Solve for x
    x = 1,062,997.75/1,226.72
  6. Step 6: Final answer
    x = 866.54

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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.