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Finding the Fourth Proportional to 635.84, 953.87 and 225.21

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Solution

The fourth proportional to 635.84, 953.87 and 225.21 is: 337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.84 : 953.87 = 225.21 : x
  2. Step 2: Convert to fraction form
    635.84/953.87 = 225.21/x
  3. Step 3: Cross multiply
    635.84x = 953.87 × 225.21
  4. Step 4: Simplify right side
    635.84x = 214,821.06
  5. Step 5: Solve for x
    x = 214,821.06/635.84
  6. Step 6: Final answer
    x = 337.85

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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.