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Finding the Fourth Proportional to 359.55, 496.20 and 210.22

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Solution

The fourth proportional to 359.55, 496.20 and 210.22 is: 290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.55 : 496.20 = 210.22 : x
  2. Step 2: Convert to fraction form
    359.55/496.20 = 210.22/x
  3. Step 3: Cross multiply
    359.55x = 496.20 × 210.22
  4. Step 4: Simplify right side
    359.55x = 104,308.68
  5. Step 5: Solve for x
    x = 104,308.68/359.55
  6. Step 6: Final answer
    x = 290.11

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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.