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Finding the Fourth Proportional to 363.85, 502.08 and 216.46

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Solution

The fourth proportional to 363.85, 502.08 and 216.46 is: 298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.85 : 502.08 = 216.46 : x
  2. Step 2: Convert to fraction form
    363.85/502.08 = 216.46/x
  3. Step 3: Cross multiply
    363.85x = 502.08 × 216.46
  4. Step 4: Simplify right side
    363.85x = 108,680.24
  5. Step 5: Solve for x
    x = 108,680.24/363.85
  6. Step 6: Final answer
    x = 298.70

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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.