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Finding the Fourth Proportional to 333.05, 456.60 and 330.21

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Solution

The fourth proportional to 333.05, 456.60 and 330.21 is: 452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.05 : 456.60 = 330.21 : x
  2. Step 2: Convert to fraction form
    333.05/456.60 = 330.21/x
  3. Step 3: Cross multiply
    333.05x = 456.60 × 330.21
  4. Step 4: Simplify right side
    333.05x = 150,775.12
  5. Step 5: Solve for x
    x = 150,775.12/333.05
  6. Step 6: Final answer
    x = 452.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.