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Finding the Fourth Proportional to 611.94, 917.90 and 247.02

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Solution

The fourth proportional to 611.94, 917.90 and 247.02 is: 370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.94 : 917.90 = 247.02 : x
  2. Step 2: Convert to fraction form
    611.94/917.90 = 247.02/x
  3. Step 3: Cross multiply
    611.94x = 917.90 × 247.02
  4. Step 4: Simplify right side
    611.94x = 226,739.66
  5. Step 5: Solve for x
    x = 226,739.66/611.94
  6. Step 6: Final answer
    x = 370.53

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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.