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Finding the Fourth Proportional to 635.50, 952.70 and 270.55

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Solution

The fourth proportional to 635.50, 952.70 and 270.55 is: 405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.50 : 952.70 = 270.55 : x
  2. Step 2: Convert to fraction form
    635.50/952.70 = 270.55/x
  3. Step 3: Cross multiply
    635.50x = 952.70 × 270.55
  4. Step 4: Simplify right side
    635.50x = 257,748.22
  5. Step 5: Solve for x
    x = 257,748.22/635.50
  6. Step 6: Final answer
    x = 405.59

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.