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Finding the Fourth Proportional to 1,422.68, 1,963.98 and 950.85

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Solution

The fourth proportional to 1,422.68, 1,963.98 and 950.85 is: 1,312.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.68 : 1,963.98 = 950.85 : x
  2. Step 2: Convert to fraction form
    1,422.68/1,963.98 = 950.85/x
  3. Step 3: Cross multiply
    1,422.68x = 1,963.98 × 950.85
  4. Step 4: Simplify right side
    1,422.68x = 1,867,450.38
  5. Step 5: Solve for x
    x = 1,867,450.38/1,422.68
  6. Step 6: Final answer
    x = 1,312.63

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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.