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Finding the Fourth Proportional to 1,400.70, 2,099.89 and 960.73

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Solution

The fourth proportional to 1,400.70, 2,099.89 and 960.73 is: 1,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.70 : 2,099.89 = 960.73 : x
  2. Step 2: Convert to fraction form
    1,400.70/2,099.89 = 960.73/x
  3. Step 3: Cross multiply
    1,400.70x = 2,099.89 × 960.73
  4. Step 4: Simplify right side
    1,400.70x = 2,017,427.32
  5. Step 5: Solve for x
    x = 2,017,427.32/1,400.70
  6. Step 6: Final answer
    x = 1,440.30

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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.