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Finding the Fourth Proportional to 548.08, 755.96 and 530

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Solution

The fourth proportional to 548.08, 755.96 and 530 is: 731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.08 : 755.96 = 530 : x
  2. Step 2: Convert to fraction form
    548.08/755.96 = 530/x
  3. Step 3: Cross multiply
    548.08x = 755.96 × 530
  4. Step 4: Simplify right side
    548.08x = 400,658.80
  5. Step 5: Solve for x
    x = 400,658.80/548.08
  6. Step 6: Final answer
    x = 731.02

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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.