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Finding the Fourth Proportional to 1,622.19, 2,238.66 and 959.61

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Solution

The fourth proportional to 1,622.19, 2,238.66 and 959.61 is: 1,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.19 : 2,238.66 = 959.61 : x
  2. Step 2: Convert to fraction form
    1,622.19/2,238.66 = 959.61/x
  3. Step 3: Cross multiply
    1,622.19x = 2,238.66 × 959.61
  4. Step 4: Simplify right side
    1,622.19x = 2,148,240.52
  5. Step 5: Solve for x
    x = 2,148,240.52/1,622.19
  6. Step 6: Final answer
    x = 1,324.28

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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.