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Finding the Fourth Proportional to 548.20, 757.35 and 359.60

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Solution

The fourth proportional to 548.20, 757.35 and 359.60 is: 496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.20 : 757.35 = 359.60 : x
  2. Step 2: Convert to fraction form
    548.20/757.35 = 359.60/x
  3. Step 3: Cross multiply
    548.20x = 757.35 × 359.60
  4. Step 4: Simplify right side
    548.20x = 272,337.92
  5. Step 5: Solve for x
    x = 272,337.92/548.20
  6. Step 6: Final answer
    x = 496.78

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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.