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Finding the Fourth Proportional to 609.97, 914.96 and 220.25

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Solution

The fourth proportional to 609.97, 914.96 and 220.25 is: 330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.97 : 914.96 = 220.25 : x
  2. Step 2: Convert to fraction form
    609.97/914.96 = 220.25/x
  3. Step 3: Cross multiply
    609.97x = 914.96 × 220.25
  4. Step 4: Simplify right side
    609.97x = 201,519.94
  5. Step 5: Solve for x
    x = 201,519.94/609.97
  6. Step 6: Final answer
    x = 330.38

Related Problems

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Half scale
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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.