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Finding the Fourth Proportional to 1,622.94, 2,238.90 and 959.56

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Solution

The fourth proportional to 1,622.94, 2,238.90 and 959.56 is: 1,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.94 : 2,238.90 = 959.56 : x
  2. Step 2: Convert to fraction form
    1,622.94/2,238.90 = 959.56/x
  3. Step 3: Cross multiply
    1,622.94x = 2,238.90 × 959.56
  4. Step 4: Simplify right side
    1,622.94x = 2,148,358.88
  5. Step 5: Solve for x
    x = 2,148,358.88/1,622.94
  6. Step 6: Final answer
    x = 1,323.75

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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.