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Finding the Fourth Proportional to 446.15, 669.45 and 229.72

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Solution

The fourth proportional to 446.15, 669.45 and 229.72 is: 344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.15 : 669.45 = 229.72 : x
  2. Step 2: Convert to fraction form
    446.15/669.45 = 229.72/x
  3. Step 3: Cross multiply
    446.15x = 669.45 × 229.72
  4. Step 4: Simplify right side
    446.15x = 153,786.05
  5. Step 5: Solve for x
    x = 153,786.05/446.15
  6. Step 6: Final answer
    x = 344.70

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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.