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Finding the Fourth Proportional to 1,099.24, 1,647.04 and 960.73

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Solution

The fourth proportional to 1,099.24, 1,647.04 and 960.73 is: 1,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.24 : 1,647.04 = 960.73 : x
  2. Step 2: Convert to fraction form
    1,099.24/1,647.04 = 960.73/x
  3. Step 3: Cross multiply
    1,099.24x = 1,647.04 × 960.73
  4. Step 4: Simplify right side
    1,099.24x = 1,582,360.74
  5. Step 5: Solve for x
    x = 1,582,360.74/1,099.24
  6. Step 6: Final answer
    x = 1,439.50

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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.