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Finding the Fourth Proportional to 635.70, 953.55 and 270.75

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Solution

The fourth proportional to 635.70, 953.55 and 270.75 is: 406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.70 : 953.55 = 270.75 : x
  2. Step 2: Convert to fraction form
    635.70/953.55 = 270.75/x
  3. Step 3: Cross multiply
    635.70x = 953.55 × 270.75
  4. Step 4: Simplify right side
    635.70x = 258,173.66
  5. Step 5: Solve for x
    x = 258,173.66/635.70
  6. Step 6: Final answer
    x = 406.13

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.