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Finding the Fourth Proportional to 359.43, 538.92 and 174.21

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Solution

The fourth proportional to 359.43, 538.92 and 174.21 is: 261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.43 : 538.92 = 174.21 : x
  2. Step 2: Convert to fraction form
    359.43/538.92 = 174.21/x
  3. Step 3: Cross multiply
    359.43x = 538.92 × 174.21
  4. Step 4: Simplify right side
    359.43x = 93,885.25
  5. Step 5: Solve for x
    x = 93,885.25/359.43
  6. Step 6: Final answer
    x = 261.21

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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.