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Finding the Fourth Proportional to 443.85, 665.25 and 351.72

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Solution

The fourth proportional to 443.85, 665.25 and 351.72 is: 527.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.85 : 665.25 = 351.72 : x
  2. Step 2: Convert to fraction form
    443.85/665.25 = 351.72/x
  3. Step 3: Cross multiply
    443.85x = 665.25 × 351.72
  4. Step 4: Simplify right side
    443.85x = 233,981.73
  5. Step 5: Solve for x
    x = 233,981.73/443.85
  6. Step 6: Final answer
    x = 527.16

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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.