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Finding the Fourth Proportional to 446.45, 669.87 and 203.18

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Solution

The fourth proportional to 446.45, 669.87 and 203.18 is: 304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.45 : 669.87 = 203.18 : x
  2. Step 2: Convert to fraction form
    446.45/669.87 = 203.18/x
  3. Step 3: Cross multiply
    446.45x = 669.87 × 203.18
  4. Step 4: Simplify right side
    446.45x = 136,100.84
  5. Step 5: Solve for x
    x = 136,100.84/446.45
  6. Step 6: Final answer
    x = 304.85

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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.