Home / 1,042.25-1,563.38-426.29

Finding the Fourth Proportional to 1,042.25, 1,563.38 and 426.29

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Solution

The fourth proportional to 1,042.25, 1,563.38 and 426.29 is: 639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.25 : 1,563.38 = 426.29 : x
  2. Step 2: Convert to fraction form
    1,042.25/1,563.38 = 426.29/x
  3. Step 3: Cross multiply
    1,042.25x = 1,563.38 × 426.29
  4. Step 4: Simplify right side
    1,042.25x = 666,453.26
  5. Step 5: Solve for x
    x = 666,453.26/1,042.25
  6. Step 6: Final answer
    x = 639.44

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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.