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Finding the Fourth Proportional to 1,745.27, 2,408.47 and 959.31

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Solution

The fourth proportional to 1,745.27, 2,408.47 and 959.31 is: 1,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.27 : 2,408.47 = 959.31 : x
  2. Step 2: Convert to fraction form
    1,745.27/2,408.47 = 959.31/x
  3. Step 3: Cross multiply
    1,745.27x = 2,408.47 × 959.31
  4. Step 4: Simplify right side
    1,745.27x = 2,310,469.36
  5. Step 5: Solve for x
    x = 2,310,469.36/1,745.27
  6. Step 6: Final answer
    x = 1,323.85

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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.