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Finding the Fourth Proportional to 239.19, 330.20 and 169.46

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Solution

The fourth proportional to 239.19, 330.20 and 169.46 is: 233.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.19 : 330.20 = 169.46 : x
  2. Step 2: Convert to fraction form
    239.19/330.20 = 169.46/x
  3. Step 3: Cross multiply
    239.19x = 330.20 × 169.46
  4. Step 4: Simplify right side
    239.19x = 55,955.69
  5. Step 5: Solve for x
    x = 55,955.69/239.19
  6. Step 6: Final answer
    x = 233.94

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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.