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Finding the Fourth Proportional to 369.54, 509.79 and 327.57

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Solution

The fourth proportional to 369.54, 509.79 and 327.57 is: 451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.54 : 509.79 = 327.57 : x
  2. Step 2: Convert to fraction form
    369.54/509.79 = 327.57/x
  3. Step 3: Cross multiply
    369.54x = 509.79 × 327.57
  4. Step 4: Simplify right side
    369.54x = 166,991.91
  5. Step 5: Solve for x
    x = 166,991.91/369.54
  6. Step 6: Final answer
    x = 451.89

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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.