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Finding the Fourth Proportional to 609.42, 914.13 and 170.66

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Solution

The fourth proportional to 609.42, 914.13 and 170.66 is: 255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.42 : 914.13 = 170.66 : x
  2. Step 2: Convert to fraction form
    609.42/914.13 = 170.66/x
  3. Step 3: Cross multiply
    609.42x = 914.13 × 170.66
  4. Step 4: Simplify right side
    609.42x = 156,005.43
  5. Step 5: Solve for x
    x = 156,005.43/609.42
  6. Step 6: Final answer
    x = 255.99

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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.