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Finding the Fourth Proportional to 617.27, 851.97 and 365.21

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Solution

The fourth proportional to 617.27, 851.97 and 365.21 is: 504.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.27 : 851.97 = 365.21 : x
  2. Step 2: Convert to fraction form
    617.27/851.97 = 365.21/x
  3. Step 3: Cross multiply
    617.27x = 851.97 × 365.21
  4. Step 4: Simplify right side
    617.27x = 311,146.21
  5. Step 5: Solve for x
    x = 311,146.21/617.27
  6. Step 6: Final answer
    x = 504.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.