Home / 1,126.97-1,690.25-305.04

Finding the Fourth Proportional to 1,126.97, 1,690.25 and 305.04

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Solution

The fourth proportional to 1,126.97, 1,690.25 and 305.04 is: 457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.97 : 1,690.25 = 305.04 : x
  2. Step 2: Convert to fraction form
    1,126.97/1,690.25 = 305.04/x
  3. Step 3: Cross multiply
    1,126.97x = 1,690.25 × 305.04
  4. Step 4: Simplify right side
    1,126.97x = 515,592.33
  5. Step 5: Solve for x
    x = 515,592.33/1,126.97
  6. Step 6: Final answer
    x = 457.51

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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.