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Finding the Fourth Proportional to 359.55, 538.88 and 153.88

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Solution

The fourth proportional to 359.55, 538.88 and 153.88 is: 230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.55 : 538.88 = 153.88 : x
  2. Step 2: Convert to fraction form
    359.55/538.88 = 153.88/x
  3. Step 3: Cross multiply
    359.55x = 538.88 × 153.88
  4. Step 4: Simplify right side
    359.55x = 82,922.85
  5. Step 5: Solve for x
    x = 82,922.85/359.55
  6. Step 6: Final answer
    x = 230.63

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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.