Home / 1,042.17-1,563.31-515.57

Finding the Fourth Proportional to 1,042.17, 1,563.31 and 515.57

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Solution

The fourth proportional to 1,042.17, 1,563.31 and 515.57 is: 773.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.17 : 1,563.31 = 515.57 : x
  2. Step 2: Convert to fraction form
    1,042.17/1,563.31 = 515.57/x
  3. Step 3: Cross multiply
    1,042.17x = 1,563.31 × 515.57
  4. Step 4: Simplify right side
    1,042.17x = 805,993.12
  5. Step 5: Solve for x
    x = 805,993.12/1,042.17
  6. Step 6: Final answer
    x = 773.38

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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.