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Finding the Fourth Proportional to 359.22, 495.99 and 261.12

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Solution

The fourth proportional to 359.22, 495.99 and 261.12 is: 360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.22 : 495.99 = 261.12 : x
  2. Step 2: Convert to fraction form
    359.22/495.99 = 261.12/x
  3. Step 3: Cross multiply
    359.22x = 495.99 × 261.12
  4. Step 4: Simplify right side
    359.22x = 129,512.91
  5. Step 5: Solve for x
    x = 129,512.91/359.22
  6. Step 6: Final answer
    x = 360.54

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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.