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Finding the Fourth Proportional to 320.36, 441.86 and 222.14

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Solution

The fourth proportional to 320.36, 441.86 and 222.14 is: 306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.36 : 441.86 = 222.14 : x
  2. Step 2: Convert to fraction form
    320.36/441.86 = 222.14/x
  3. Step 3: Cross multiply
    320.36x = 441.86 × 222.14
  4. Step 4: Simplify right side
    320.36x = 98,154.78
  5. Step 5: Solve for x
    x = 98,154.78/320.36
  6. Step 6: Final answer
    x = 306.39

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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.