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Finding the Fourth Proportional to 548.75, 757.28 and 374.09

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Solution

The fourth proportional to 548.75, 757.28 and 374.09 is: 516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.75 : 757.28 = 374.09 : x
  2. Step 2: Convert to fraction form
    548.75/757.28 = 374.09/x
  3. Step 3: Cross multiply
    548.75x = 757.28 × 374.09
  4. Step 4: Simplify right side
    548.75x = 283,290.88
  5. Step 5: Solve for x
    x = 283,290.88/548.75
  6. Step 6: Final answer
    x = 516.25

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Find fourth proportional to 274.38, 378.64 and 187.05
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Double scale
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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.