Home / 1,126.20-1,689.11-304.37

Finding the Fourth Proportional to 1,126.20, 1,689.11 and 304.37

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Solution

The fourth proportional to 1,126.20, 1,689.11 and 304.37 is: 456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.20 : 1,689.11 = 304.37 : x
  2. Step 2: Convert to fraction form
    1,126.20/1,689.11 = 304.37/x
  3. Step 3: Cross multiply
    1,126.20x = 1,689.11 × 304.37
  4. Step 4: Simplify right side
    1,126.20x = 514,104.44
  5. Step 5: Solve for x
    x = 514,104.44/1,126.20
  6. Step 6: Final answer
    x = 456.49

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Double scale
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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.