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Finding the Fourth Proportional to 359.58, 496.20 and 212.20

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Solution

The fourth proportional to 359.58, 496.20 and 212.20 is: 292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.58 : 496.20 = 212.20 : x
  2. Step 2: Convert to fraction form
    359.58/496.20 = 212.20/x
  3. Step 3: Cross multiply
    359.58x = 496.20 × 212.20
  4. Step 4: Simplify right side
    359.58x = 105,293.64
  5. Step 5: Solve for x
    x = 105,293.64/359.58
  6. Step 6: Final answer
    x = 292.82

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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.