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Finding the Fourth Proportional to 240.40, 329.78 and 222.04

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Solution

The fourth proportional to 240.40, 329.78 and 222.04 is: 304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.40 : 329.78 = 222.04 : x
  2. Step 2: Convert to fraction form
    240.40/329.78 = 222.04/x
  3. Step 3: Cross multiply
    240.40x = 329.78 × 222.04
  4. Step 4: Simplify right side
    240.40x = 73,224.35
  5. Step 5: Solve for x
    x = 73,224.35/240.40
  6. Step 6: Final answer
    x = 304.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.