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Finding the Fourth Proportional to 544.85, 817.67 and 220.21

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Solution

The fourth proportional to 544.85, 817.67 and 220.21 is: 330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.85 : 817.67 = 220.21 : x
  2. Step 2: Convert to fraction form
    544.85/817.67 = 220.21/x
  3. Step 3: Cross multiply
    544.85x = 817.67 × 220.21
  4. Step 4: Simplify right side
    544.85x = 180,055.97
  5. Step 5: Solve for x
    x = 180,055.97/544.85
  6. Step 6: Final answer
    x = 330.47

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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.