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Finding the Fourth Proportional to 359.23, 495.80 and 211.85

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Solution

The fourth proportional to 359.23, 495.80 and 211.85 is: 292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.23 : 495.80 = 211.85 : x
  2. Step 2: Convert to fraction form
    359.23/495.80 = 211.85/x
  3. Step 3: Cross multiply
    359.23x = 495.80 × 211.85
  4. Step 4: Simplify right side
    359.23x = 105,035.23
  5. Step 5: Solve for x
    x = 105,035.23/359.23
  6. Step 6: Final answer
    x = 292.39

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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.