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Finding the Fourth Proportional to 331.63, 498.17 and 201.70

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Solution

The fourth proportional to 331.63, 498.17 and 201.70 is: 302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.63 : 498.17 = 201.70 : x
  2. Step 2: Convert to fraction form
    331.63/498.17 = 201.70/x
  3. Step 3: Cross multiply
    331.63x = 498.17 × 201.70
  4. Step 4: Simplify right side
    331.63x = 100,479.48
  5. Step 5: Solve for x
    x = 100,479.48/331.63
  6. Step 6: Final answer
    x = 302.99

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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.