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Finding the Fourth Proportional to 239.09, 330.19 and 190.34

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Solution

The fourth proportional to 239.09, 330.19 and 190.34 is: 262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.09 : 330.19 = 190.34 : x
  2. Step 2: Convert to fraction form
    239.09/330.19 = 190.34/x
  3. Step 3: Cross multiply
    239.09x = 330.19 × 190.34
  4. Step 4: Simplify right side
    239.09x = 62,848.36
  5. Step 5: Solve for x
    x = 62,848.36/239.09
  6. Step 6: Final answer
    x = 262.86

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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.