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Finding the Fourth Proportional to 239.65, 330.54 and 177.48

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Solution

The fourth proportional to 239.65, 330.54 and 177.48 is: 244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.65 : 330.54 = 177.48 : x
  2. Step 2: Convert to fraction form
    239.65/330.54 = 177.48/x
  3. Step 3: Cross multiply
    239.65x = 330.54 × 177.48
  4. Step 4: Simplify right side
    239.65x = 58,664.24
  5. Step 5: Solve for x
    x = 58,664.24/239.65
  6. Step 6: Final answer
    x = 244.79

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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.