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Finding the Fourth Proportional to 240.27, 358.21 and 222.21

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Solution

The fourth proportional to 240.27, 358.21 and 222.21 is: 331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.27 : 358.21 = 222.21 : x
  2. Step 2: Convert to fraction form
    240.27/358.21 = 222.21/x
  3. Step 3: Cross multiply
    240.27x = 358.21 × 222.21
  4. Step 4: Simplify right side
    240.27x = 79,597.29
  5. Step 5: Solve for x
    x = 79,597.29/240.27
  6. Step 6: Final answer
    x = 331.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.