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Finding the Fourth Proportional to 635.20, 888.20 and 635.20

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Solution

The fourth proportional to 635.20, 888.20 and 635.20 is: 888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.20 : 888.20 = 635.20 : x
  2. Step 2: Convert to fraction form
    635.20/888.20 = 635.20/x
  3. Step 3: Cross multiply
    635.20x = 888.20 × 635.20
  4. Step 4: Simplify right side
    635.20x = 564,184.64
  5. Step 5: Solve for x
    x = 564,184.64/635.20
  6. Step 6: Final answer
    x = 888.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.