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Finding the Fourth Proportional to 359.39, 495.83 and 219.49

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Solution

The fourth proportional to 359.39, 495.83 and 219.49 is: 302.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.39 : 495.83 = 219.49 : x
  2. Step 2: Convert to fraction form
    359.39/495.83 = 219.49/x
  3. Step 3: Cross multiply
    359.39x = 495.83 × 219.49
  4. Step 4: Simplify right side
    359.39x = 108,829.04
  5. Step 5: Solve for x
    x = 108,829.04/359.39
  6. Step 6: Final answer
    x = 302.81

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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.