Home / 1,175.72-1,764.38-628.29

Finding the Fourth Proportional to 1,175.72, 1,764.38 and 628.29

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Solution

The fourth proportional to 1,175.72, 1,764.38 and 628.29 is: 942.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.72 : 1,764.38 = 628.29 : x
  2. Step 2: Convert to fraction form
    1,175.72/1,764.38 = 628.29/x
  3. Step 3: Cross multiply
    1,175.72x = 1,764.38 × 628.29
  4. Step 4: Simplify right side
    1,175.72x = 1,108,542.31
  5. Step 5: Solve for x
    x = 1,108,542.31/1,175.72
  6. Step 6: Final answer
    x = 942.86

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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.