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Finding the Fourth Proportional to 446.38, 669.45 and 202.85

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Solution

The fourth proportional to 446.38, 669.45 and 202.85 is: 304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.38 : 669.45 = 202.85 : x
  2. Step 2: Convert to fraction form
    446.38/669.45 = 202.85/x
  3. Step 3: Cross multiply
    446.38x = 669.45 × 202.85
  4. Step 4: Simplify right side
    446.38x = 135,800.37
  5. Step 5: Solve for x
    x = 135,800.37/446.38
  6. Step 6: Final answer
    x = 304.23

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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.