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Finding the Fourth Proportional to 359.70, 539.61 and 186.45

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Solution

The fourth proportional to 359.70, 539.61 and 186.45 is: 279.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.70 : 539.61 = 186.45 : x
  2. Step 2: Convert to fraction form
    359.70/539.61 = 186.45/x
  3. Step 3: Cross multiply
    359.70x = 539.61 × 186.45
  4. Step 4: Simplify right side
    359.70x = 100,610.28
  5. Step 5: Solve for x
    x = 100,610.28/359.70
  6. Step 6: Final answer
    x = 279.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.