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Finding the Fourth Proportional to 243.28, 364.20 and 242.96

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Solution

The fourth proportional to 243.28, 364.20 and 242.96 is: 363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.28 : 364.20 = 242.96 : x
  2. Step 2: Convert to fraction form
    243.28/364.20 = 242.96/x
  3. Step 3: Cross multiply
    243.28x = 364.20 × 242.96
  4. Step 4: Simplify right side
    243.28x = 88,486.03
  5. Step 5: Solve for x
    x = 88,486.03/243.28
  6. Step 6: Final answer
    x = 363.72

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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.