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Finding the Fourth Proportional to 2,299.73, 3,448.86 and 912.66

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Solution

The fourth proportional to 2,299.73, 3,448.86 and 912.66 is: 1,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.73 : 3,448.86 = 912.66 : x
  2. Step 2: Convert to fraction form
    2,299.73/3,448.86 = 912.66/x
  3. Step 3: Cross multiply
    2,299.73x = 3,448.86 × 912.66
  4. Step 4: Simplify right side
    2,299.73x = 3,147,636.57
  5. Step 5: Solve for x
    x = 3,147,636.57/2,299.73
  6. Step 6: Final answer
    x = 1,368.70

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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.