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Finding the Fourth Proportional to 446.61, 672.51 and 331.88

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Solution

The fourth proportional to 446.61, 672.51 and 331.88 is: 499.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.61 : 672.51 = 331.88 : x
  2. Step 2: Convert to fraction form
    446.61/672.51 = 331.88/x
  3. Step 3: Cross multiply
    446.61x = 672.51 × 331.88
  4. Step 4: Simplify right side
    446.61x = 223,189.26
  5. Step 5: Solve for x
    x = 223,189.26/446.61
  6. Step 6: Final answer
    x = 499.74

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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.