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Finding the Fourth Proportional to 446.63, 672.57 and 331.89

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Solution

The fourth proportional to 446.63, 672.57 and 331.89 is: 499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.63 : 672.57 = 331.89 : x
  2. Step 2: Convert to fraction form
    446.63/672.57 = 331.89/x
  3. Step 3: Cross multiply
    446.63x = 672.57 × 331.89
  4. Step 4: Simplify right side
    446.63x = 223,219.26
  5. Step 5: Solve for x
    x = 223,219.26/446.63
  6. Step 6: Final answer
    x = 499.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.