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Finding the Fourth Proportional to 363.54, 501.69 and 216.20

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Solution

The fourth proportional to 363.54, 501.69 and 216.20 is: 298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.54 : 501.69 = 216.20 : x
  2. Step 2: Convert to fraction form
    363.54/501.69 = 216.20/x
  3. Step 3: Cross multiply
    363.54x = 501.69 × 216.20
  4. Step 4: Simplify right side
    363.54x = 108,462.87
  5. Step 5: Solve for x
    x = 108,462.87/363.54
  6. Step 6: Final answer
    x = 298.35

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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.