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Finding the Fourth Proportional to 359.28, 538.79 and 153.86

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Solution

The fourth proportional to 359.28, 538.79 and 153.86 is: 230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.28 : 538.79 = 153.86 : x
  2. Step 2: Convert to fraction form
    359.28/538.79 = 153.86/x
  3. Step 3: Cross multiply
    359.28x = 538.79 × 153.86
  4. Step 4: Simplify right side
    359.28x = 82,897.46
  5. Step 5: Solve for x
    x = 82,897.46/359.28
  6. Step 6: Final answer
    x = 230.73

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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.