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Finding the Fourth Proportional to 243.27, 364.05 and 207.63

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Solution

The fourth proportional to 243.27, 364.05 and 207.63 is: 310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.27 : 364.05 = 207.63 : x
  2. Step 2: Convert to fraction form
    243.27/364.05 = 207.63/x
  3. Step 3: Cross multiply
    243.27x = 364.05 × 207.63
  4. Step 4: Simplify right side
    243.27x = 75,587.70
  5. Step 5: Solve for x
    x = 75,587.70/243.27
  6. Step 6: Final answer
    x = 310.72

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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.