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Finding the Fourth Proportional to 365.99, 505.17 and 239.97

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Solution

The fourth proportional to 365.99, 505.17 and 239.97 is: 331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.99 : 505.17 = 239.97 : x
  2. Step 2: Convert to fraction form
    365.99/505.17 = 239.97/x
  3. Step 3: Cross multiply
    365.99x = 505.17 × 239.97
  4. Step 4: Simplify right side
    365.99x = 121,225.64
  5. Step 5: Solve for x
    x = 121,225.64/365.99
  6. Step 6: Final answer
    x = 331.23

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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.