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Finding the Fourth Proportional to 1,634.18, 2,453.97 and 905.18

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Solution

The fourth proportional to 1,634.18, 2,453.97 and 905.18 is: 1,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.18 : 2,453.97 = 905.18 : x
  2. Step 2: Convert to fraction form
    1,634.18/2,453.97 = 905.18/x
  3. Step 3: Cross multiply
    1,634.18x = 2,453.97 × 905.18
  4. Step 4: Simplify right side
    1,634.18x = 2,221,284.56
  5. Step 5: Solve for x
    x = 2,221,284.56/1,634.18
  6. Step 6: Final answer
    x = 1,359.27

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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.