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Finding the Fourth Proportional to 1,271.99, 1,755.41 and 799.76

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Solution

The fourth proportional to 1,271.99, 1,755.41 and 799.76 is: 1,103.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.99 : 1,755.41 = 799.76 : x
  2. Step 2: Convert to fraction form
    1,271.99/1,755.41 = 799.76/x
  3. Step 3: Cross multiply
    1,271.99x = 1,755.41 × 799.76
  4. Step 4: Simplify right side
    1,271.99x = 1,403,907.09
  5. Step 5: Solve for x
    x = 1,403,907.09/1,271.99
  6. Step 6: Final answer
    x = 1,103.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.