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Finding the Fourth Proportional to 394.17, 544.04 and 219.53

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Solution

The fourth proportional to 394.17, 544.04 and 219.53 is: 302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.17 : 544.04 = 219.53 : x
  2. Step 2: Convert to fraction form
    394.17/544.04 = 219.53/x
  3. Step 3: Cross multiply
    394.17x = 544.04 × 219.53
  4. Step 4: Simplify right side
    394.17x = 119,429.28
  5. Step 5: Solve for x
    x = 119,429.28/394.17
  6. Step 6: Final answer
    x = 302.99

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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.