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Finding the Fourth Proportional to 613.09, 919.03 and 247.38

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Solution

The fourth proportional to 613.09, 919.03 and 247.38 is: 370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.09 : 919.03 = 247.38 : x
  2. Step 2: Convert to fraction form
    613.09/919.03 = 247.38/x
  3. Step 3: Cross multiply
    613.09x = 919.03 × 247.38
  4. Step 4: Simplify right side
    613.09x = 227,349.64
  5. Step 5: Solve for x
    x = 227,349.64/613.09
  6. Step 6: Final answer
    x = 370.83

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Double scale
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Similar ratio
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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.