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Finding the Fourth Proportional to 359.79, 538.59 and 196.98

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Solution

The fourth proportional to 359.79, 538.59 and 196.98 is: 294.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.79 : 538.59 = 196.98 : x
  2. Step 2: Convert to fraction form
    359.79/538.59 = 196.98/x
  3. Step 3: Cross multiply
    359.79x = 538.59 × 196.98
  4. Step 4: Simplify right side
    359.79x = 106,091.46
  5. Step 5: Solve for x
    x = 106,091.46/359.79
  6. Step 6: Final answer
    x = 294.87

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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.