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Finding the Fourth Proportional to 1,794.20, 2,691.30 and 495.68

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Solution

The fourth proportional to 1,794.20, 2,691.30 and 495.68 is: 743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.20 : 2,691.30 = 495.68 : x
  2. Step 2: Convert to fraction form
    1,794.20/2,691.30 = 495.68/x
  3. Step 3: Cross multiply
    1,794.20x = 2,691.30 × 495.68
  4. Step 4: Simplify right side
    1,794.20x = 1,334,010.13
  5. Step 5: Solve for x
    x = 1,334,010.13/1,794.20
  6. Step 6: Final answer
    x = 743.51

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Double scale
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Similar ratio
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1.5x scale

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.