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Finding the Fourth Proportional to 330.46, 494.79 and 222.10

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Solution

The fourth proportional to 330.46, 494.79 and 222.10 is: 332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.46 : 494.79 = 222.10 : x
  2. Step 2: Convert to fraction form
    330.46/494.79 = 222.10/x
  3. Step 3: Cross multiply
    330.46x = 494.79 × 222.10
  4. Step 4: Simplify right side
    330.46x = 109,892.86
  5. Step 5: Solve for x
    x = 109,892.86/330.46
  6. Step 6: Final answer
    x = 332.55

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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.