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Finding the Fourth Proportional to 635.68, 953.87 and 311.05

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Solution

The fourth proportional to 635.68, 953.87 and 311.05 is: 466.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.68 : 953.87 = 311.05 : x
  2. Step 2: Convert to fraction form
    635.68/953.87 = 311.05/x
  3. Step 3: Cross multiply
    635.68x = 953.87 × 311.05
  4. Step 4: Simplify right side
    635.68x = 296,701.26
  5. Step 5: Solve for x
    x = 296,701.26/635.68
  6. Step 6: Final answer
    x = 466.75

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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.