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Finding the Fourth Proportional to 645.84, 967.41 and 481.55

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Solution

The fourth proportional to 645.84, 967.41 and 481.55 is: 721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.84 : 967.41 = 481.55 : x
  2. Step 2: Convert to fraction form
    645.84/967.41 = 481.55/x
  3. Step 3: Cross multiply
    645.84x = 967.41 × 481.55
  4. Step 4: Simplify right side
    645.84x = 465,851.45
  5. Step 5: Solve for x
    x = 465,851.45/645.84
  6. Step 6: Final answer
    x = 721.31

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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.