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Finding the Fourth Proportional to 365.29, 503.86 and 217.81

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Solution

The fourth proportional to 365.29, 503.86 and 217.81 is: 300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.29 : 503.86 = 217.81 : x
  2. Step 2: Convert to fraction form
    365.29/503.86 = 217.81/x
  3. Step 3: Cross multiply
    365.29x = 503.86 × 217.81
  4. Step 4: Simplify right side
    365.29x = 109,745.75
  5. Step 5: Solve for x
    x = 109,745.75/365.29
  6. Step 6: Final answer
    x = 300.43

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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.