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Finding the Fourth Proportional to 359.65, 539.37 and 137.23

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Solution

The fourth proportional to 359.65, 539.37 and 137.23 is: 205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.65 : 539.37 = 137.23 : x
  2. Step 2: Convert to fraction form
    359.65/539.37 = 137.23/x
  3. Step 3: Cross multiply
    359.65x = 539.37 × 137.23
  4. Step 4: Simplify right side
    359.65x = 74,017.75
  5. Step 5: Solve for x
    x = 74,017.75/359.65
  6. Step 6: Final answer
    x = 205.80

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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.