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Finding the Fourth Proportional to 443.94, 665.82 and 322.26

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Solution

The fourth proportional to 443.94, 665.82 and 322.26 is: 483.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.94 : 665.82 = 322.26 : x
  2. Step 2: Convert to fraction form
    443.94/665.82 = 322.26/x
  3. Step 3: Cross multiply
    443.94x = 665.82 × 322.26
  4. Step 4: Simplify right side
    443.94x = 214,567.15
  5. Step 5: Solve for x
    x = 214,567.15/443.94
  6. Step 6: Final answer
    x = 483.32

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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.