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Finding the Fourth Proportional to 548.63, 756.85 and 371.53

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Solution

The fourth proportional to 548.63, 756.85 and 371.53 is: 512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.63 : 756.85 = 371.53 : x
  2. Step 2: Convert to fraction form
    548.63/756.85 = 371.53/x
  3. Step 3: Cross multiply
    548.63x = 756.85 × 371.53
  4. Step 4: Simplify right side
    548.63x = 281,192.48
  5. Step 5: Solve for x
    x = 281,192.48/548.63
  6. Step 6: Final answer
    x = 512.54

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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.