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Finding the Fourth Proportional to 635.17, 876.22 and 425.39

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Solution

The fourth proportional to 635.17, 876.22 and 425.39 is: 586.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.17 : 876.22 = 425.39 : x
  2. Step 2: Convert to fraction form
    635.17/876.22 = 425.39/x
  3. Step 3: Cross multiply
    635.17x = 876.22 × 425.39
  4. Step 4: Simplify right side
    635.17x = 372,735.23
  5. Step 5: Solve for x
    x = 372,735.23/635.17
  6. Step 6: Final answer
    x = 586.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.