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Finding the Fourth Proportional to 548.80, 757.55 and 339.01

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Solution

The fourth proportional to 548.80, 757.55 and 339.01 is: 467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.80 : 757.55 = 339.01 : x
  2. Step 2: Convert to fraction form
    548.80/757.55 = 339.01/x
  3. Step 3: Cross multiply
    548.80x = 757.55 × 339.01
  4. Step 4: Simplify right side
    548.80x = 256,817.03
  5. Step 5: Solve for x
    x = 256,817.03/548.80
  6. Step 6: Final answer
    x = 467.96

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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.