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Finding the Fourth Proportional to 365.29, 504.20 and 225.43

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Solution

The fourth proportional to 365.29, 504.20 and 225.43 is: 311.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.29 : 504.20 = 225.43 : x
  2. Step 2: Convert to fraction form
    365.29/504.20 = 225.43/x
  3. Step 3: Cross multiply
    365.29x = 504.20 × 225.43
  4. Step 4: Simplify right side
    365.29x = 113,661.81
  5. Step 5: Solve for x
    x = 113,661.81/365.29
  6. Step 6: Final answer
    x = 311.15

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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.