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Finding the Fourth Proportional to 950.44, 1,422.42 and 928.84

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Solution

The fourth proportional to 950.44, 1,422.42 and 928.84 is: 1,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.44 : 1,422.42 = 928.84 : x
  2. Step 2: Convert to fraction form
    950.44/1,422.42 = 928.84/x
  3. Step 3: Cross multiply
    950.44x = 1,422.42 × 928.84
  4. Step 4: Simplify right side
    950.44x = 1,321,200.59
  5. Step 5: Solve for x
    x = 1,321,200.59/950.44
  6. Step 6: Final answer
    x = 1,390.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.