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Finding the Fourth Proportional to 325.62, 487.42 and 222.14

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Solution

The fourth proportional to 325.62, 487.42 and 222.14 is: 332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.62 : 487.42 = 222.14 : x
  2. Step 2: Convert to fraction form
    325.62/487.42 = 222.14/x
  3. Step 3: Cross multiply
    325.62x = 487.42 × 222.14
  4. Step 4: Simplify right side
    325.62x = 108,276.14
  5. Step 5: Solve for x
    x = 108,276.14/325.62
  6. Step 6: Final answer
    x = 332.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.