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Finding the Fourth Proportional to 443.23, 665.19 and 307.23

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Solution

The fourth proportional to 443.23, 665.19 and 307.23 is: 461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.23 : 665.19 = 307.23 : x
  2. Step 2: Convert to fraction form
    443.23/665.19 = 307.23/x
  3. Step 3: Cross multiply
    443.23x = 665.19 × 307.23
  4. Step 4: Simplify right side
    443.23x = 204,366.32
  5. Step 5: Solve for x
    x = 204,366.32/443.23
  6. Step 6: Final answer
    x = 461.09

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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.