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Finding the Fourth Proportional to 369.09, 553.26 and 231.83

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Solution

The fourth proportional to 369.09, 553.26 and 231.83 is: 347.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.09 : 553.26 = 231.83 : x
  2. Step 2: Convert to fraction form
    369.09/553.26 = 231.83/x
  3. Step 3: Cross multiply
    369.09x = 553.26 × 231.83
  4. Step 4: Simplify right side
    369.09x = 128,262.27
  5. Step 5: Solve for x
    x = 128,262.27/369.09
  6. Step 6: Final answer
    x = 347.51

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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.