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Finding the Fourth Proportional to 359.11, 536.48 and 255.59

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Solution

The fourth proportional to 359.11, 536.48 and 255.59 is: 381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.11 : 536.48 = 255.59 : x
  2. Step 2: Convert to fraction form
    359.11/536.48 = 255.59/x
  3. Step 3: Cross multiply
    359.11x = 536.48 × 255.59
  4. Step 4: Simplify right side
    359.11x = 137,118.92
  5. Step 5: Solve for x
    x = 137,118.92/359.11
  6. Step 6: Final answer
    x = 381.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.