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Finding the Fourth Proportional to 445.08, 667.62 and 201.61

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Solution

The fourth proportional to 445.08, 667.62 and 201.61 is: 302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.08 : 667.62 = 201.61 : x
  2. Step 2: Convert to fraction form
    445.08/667.62 = 201.61/x
  3. Step 3: Cross multiply
    445.08x = 667.62 × 201.61
  4. Step 4: Simplify right side
    445.08x = 134,595.38
  5. Step 5: Solve for x
    x = 134,595.38/445.08
  6. Step 6: Final answer
    x = 302.41

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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.