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Finding the Fourth Proportional to 372.05, 513.46 and 222.68

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Solution

The fourth proportional to 372.05, 513.46 and 222.68 is: 307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.05 : 513.46 = 222.68 : x
  2. Step 2: Convert to fraction form
    372.05/513.46 = 222.68/x
  3. Step 3: Cross multiply
    372.05x = 513.46 × 222.68
  4. Step 4: Simplify right side
    372.05x = 114,336.16
  5. Step 5: Solve for x
    x = 114,336.16/372.05
  6. Step 6: Final answer
    x = 307.31

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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.