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Finding the Fourth Proportional to 300.51, 414.45 and 222.75

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Solution

The fourth proportional to 300.51, 414.45 and 222.75 is: 307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.51 : 414.45 = 222.75 : x
  2. Step 2: Convert to fraction form
    300.51/414.45 = 222.75/x
  3. Step 3: Cross multiply
    300.51x = 414.45 × 222.75
  4. Step 4: Simplify right side
    300.51x = 92,318.74
  5. Step 5: Solve for x
    x = 92,318.74/300.51
  6. Step 6: Final answer
    x = 307.21

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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.