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Finding the Fourth Proportional to 548.06, 756.56 and 382.21

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Solution

The fourth proportional to 548.06, 756.56 and 382.21 is: 527.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.06 : 756.56 = 382.21 : x
  2. Step 2: Convert to fraction form
    548.06/756.56 = 382.21/x
  3. Step 3: Cross multiply
    548.06x = 756.56 × 382.21
  4. Step 4: Simplify right side
    548.06x = 289,164.80
  5. Step 5: Solve for x
    x = 289,164.80/548.06
  6. Step 6: Final answer
    x = 527.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.