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Finding the Fourth Proportional to 1,745.14, 2,408.31 and 959.17

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Solution

The fourth proportional to 1,745.14, 2,408.31 and 959.17 is: 1,323.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.14 : 2,408.31 = 959.17 : x
  2. Step 2: Convert to fraction form
    1,745.14/2,408.31 = 959.17/x
  3. Step 3: Cross multiply
    1,745.14x = 2,408.31 × 959.17
  4. Step 4: Simplify right side
    1,745.14x = 2,309,978.70
  5. Step 5: Solve for x
    x = 2,309,978.70/1,745.14
  6. Step 6: Final answer
    x = 1,323.66

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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.