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Finding the Fourth Proportional to 359.76, 496.68 and 243.12

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Solution

The fourth proportional to 359.76, 496.68 and 243.12 is: 335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.76 : 496.68 = 243.12 : x
  2. Step 2: Convert to fraction form
    359.76/496.68 = 243.12/x
  3. Step 3: Cross multiply
    359.76x = 496.68 × 243.12
  4. Step 4: Simplify right side
    359.76x = 120,752.84
  5. Step 5: Solve for x
    x = 120,752.84/359.76
  6. Step 6: Final answer
    x = 335.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.