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Finding the Fourth Proportional to 359.03, 496.10 and 280.54

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Solution

The fourth proportional to 359.03, 496.10 and 280.54 is: 387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.03 : 496.10 = 280.54 : x
  2. Step 2: Convert to fraction form
    359.03/496.10 = 280.54/x
  3. Step 3: Cross multiply
    359.03x = 496.10 × 280.54
  4. Step 4: Simplify right side
    359.03x = 139,175.89
  5. Step 5: Solve for x
    x = 139,175.89/359.03
  6. Step 6: Final answer
    x = 387.64

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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.