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Finding the Fourth Proportional to 447.81, 670.29 and 324.00

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Solution

The fourth proportional to 447.81, 670.29 and 324.00 is: 484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.81 : 670.29 = 324.00 : x
  2. Step 2: Convert to fraction form
    447.81/670.29 = 324.00/x
  3. Step 3: Cross multiply
    447.81x = 670.29 × 324.00
  4. Step 4: Simplify right side
    447.81x = 217,170.61
  5. Step 5: Solve for x
    x = 217,170.61/447.81
  6. Step 6: Final answer
    x = 484.96

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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.