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Finding the Fourth Proportional to 363.84, 544.94 and 209.40

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Solution

The fourth proportional to 363.84, 544.94 and 209.40 is: 313.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.84 : 544.94 = 209.40 : x
  2. Step 2: Convert to fraction form
    363.84/544.94 = 209.40/x
  3. Step 3: Cross multiply
    363.84x = 544.94 × 209.40
  4. Step 4: Simplify right side
    363.84x = 114,110.44
  5. Step 5: Solve for x
    x = 114,110.44/363.84
  6. Step 6: Final answer
    x = 313.63

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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.