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Finding the Fourth Proportional to 2,292.73, 3,438.79 and 649.42

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Solution

The fourth proportional to 2,292.73, 3,438.79 and 649.42 is: 974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.73 : 3,438.79 = 649.42 : x
  2. Step 2: Convert to fraction form
    2,292.73/3,438.79 = 649.42/x
  3. Step 3: Cross multiply
    2,292.73x = 3,438.79 × 649.42
  4. Step 4: Simplify right side
    2,292.73x = 2,233,219.00
  5. Step 5: Solve for x
    x = 2,233,219.00/2,292.73
  6. Step 6: Final answer
    x = 974.04

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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.