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Finding the Fourth Proportional to 1,427.00, 2,140.49 and 733.86

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Solution

The fourth proportional to 1,427.00, 2,140.49 and 733.86 is: 1,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.00 : 2,140.49 = 733.86 : x
  2. Step 2: Convert to fraction form
    1,427.00/2,140.49 = 733.86/x
  3. Step 3: Cross multiply
    1,427.00x = 2,140.49 × 733.86
  4. Step 4: Simplify right side
    1,427.00x = 1,570,818.73
  5. Step 5: Solve for x
    x = 1,570,818.73/1,427.00
  6. Step 6: Final answer
    x = 1,100.79

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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.