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Finding the Fourth Proportional to 363.21, 544.95 and 219.03

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Solution

The fourth proportional to 363.21, 544.95 and 219.03 is: 328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.21 : 544.95 = 219.03 : x
  2. Step 2: Convert to fraction form
    363.21/544.95 = 219.03/x
  3. Step 3: Cross multiply
    363.21x = 544.95 × 219.03
  4. Step 4: Simplify right side
    363.21x = 119,356.58
  5. Step 5: Solve for x
    x = 119,356.58/363.21
  6. Step 6: Final answer
    x = 328.62

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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.