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Finding the Fourth Proportional to 363.81, 502.27 and 279.63

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Solution

The fourth proportional to 363.81, 502.27 and 279.63 is: 386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.81 : 502.27 = 279.63 : x
  2. Step 2: Convert to fraction form
    363.81/502.27 = 279.63/x
  3. Step 3: Cross multiply
    363.81x = 502.27 × 279.63
  4. Step 4: Simplify right side
    363.81x = 140,449.76
  5. Step 5: Solve for x
    x = 140,449.76/363.81
  6. Step 6: Final answer
    x = 386.05

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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.