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Finding the Fourth Proportional to 1,351.67, 2,027.67 and 377.78

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Solution

The fourth proportional to 1,351.67, 2,027.67 and 377.78 is: 566.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.67 : 2,027.67 = 377.78 : x
  2. Step 2: Convert to fraction form
    1,351.67/2,027.67 = 377.78/x
  3. Step 3: Cross multiply
    1,351.67x = 2,027.67 × 377.78
  4. Step 4: Simplify right side
    1,351.67x = 766,003.03
  5. Step 5: Solve for x
    x = 766,003.03/1,351.67
  6. Step 6: Final answer
    x = 566.71

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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.