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Finding the Fourth Proportional to 548.71, 755.46 and 511.45

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Solution

The fourth proportional to 548.71, 755.46 and 511.45 is: 704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.71 : 755.46 = 511.45 : x
  2. Step 2: Convert to fraction form
    548.71/755.46 = 511.45/x
  3. Step 3: Cross multiply
    548.71x = 755.46 × 511.45
  4. Step 4: Simplify right side
    548.71x = 386,380.02
  5. Step 5: Solve for x
    x = 386,380.02/548.71
  6. Step 6: Final answer
    x = 704.16

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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.