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Finding the Fourth Proportional to 609.53, 914.28 and 414.05

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Solution

The fourth proportional to 609.53, 914.28 and 414.05 is: 621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.53 : 914.28 = 414.05 : x
  2. Step 2: Convert to fraction form
    609.53/914.28 = 414.05/x
  3. Step 3: Cross multiply
    609.53x = 914.28 × 414.05
  4. Step 4: Simplify right side
    609.53x = 378,553.06
  5. Step 5: Solve for x
    x = 378,553.06/609.53
  6. Step 6: Final answer
    x = 621.06

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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.