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Finding the Fourth Proportional to 359.10, 495.69 and 239.49

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Solution

The fourth proportional to 359.10, 495.69 and 239.49 is: 330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.10 : 495.69 = 239.49 : x
  2. Step 2: Convert to fraction form
    359.10/495.69 = 239.49/x
  3. Step 3: Cross multiply
    359.10x = 495.69 × 239.49
  4. Step 4: Simplify right side
    359.10x = 118,712.80
  5. Step 5: Solve for x
    x = 118,712.80/359.10
  6. Step 6: Final answer
    x = 330.58

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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.