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Finding the Fourth Proportional to 333.78, 499.68 and 201.57

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Solution

The fourth proportional to 333.78, 499.68 and 201.57 is: 301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.78 : 499.68 = 201.57 : x
  2. Step 2: Convert to fraction form
    333.78/499.68 = 201.57/x
  3. Step 3: Cross multiply
    333.78x = 499.68 × 201.57
  4. Step 4: Simplify right side
    333.78x = 100,720.50
  5. Step 5: Solve for x
    x = 100,720.50/333.78
  6. Step 6: Final answer
    x = 301.76

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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.