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Finding the Fourth Proportional to 333.72, 462.71 and 320.15

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Solution

The fourth proportional to 333.72, 462.71 and 320.15 is: 443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.72 : 462.71 = 320.15 : x
  2. Step 2: Convert to fraction form
    333.72/462.71 = 320.15/x
  3. Step 3: Cross multiply
    333.72x = 462.71 × 320.15
  4. Step 4: Simplify right side
    333.72x = 148,138.56
  5. Step 5: Solve for x
    x = 148,138.56/333.72
  6. Step 6: Final answer
    x = 443.90

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.