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Finding the Fourth Proportional to 1,079.60, 1,611.52 and 950

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Solution

The fourth proportional to 1,079.60, 1,611.52 and 950 is: 1,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.60 : 1,611.52 = 950 : x
  2. Step 2: Convert to fraction form
    1,079.60/1,611.52 = 950/x
  3. Step 3: Cross multiply
    1,079.60x = 1,611.52 × 950
  4. Step 4: Simplify right side
    1,079.60x = 1,530,944
  5. Step 5: Solve for x
    x = 1,530,944/1,079.60
  6. Step 6: Final answer
    x = 1,418.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.