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Finding the Fourth Proportional to 2,393.00, 3,589.09 and 661.22

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Solution

The fourth proportional to 2,393.00, 3,589.09 and 661.22 is: 991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.00 : 3,589.09 = 661.22 : x
  2. Step 2: Convert to fraction form
    2,393.00/3,589.09 = 661.22/x
  3. Step 3: Cross multiply
    2,393.00x = 3,589.09 × 661.22
  4. Step 4: Simplify right side
    2,393.00x = 2,373,171.95
  5. Step 5: Solve for x
    x = 2,373,171.95/2,393.00
  6. Step 6: Final answer
    x = 991.71

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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.