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Finding the Fourth Proportional to 636.62, 882.34 and 624.96

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Solution

The fourth proportional to 636.62, 882.34 and 624.96 is: 866.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.62 : 882.34 = 624.96 : x
  2. Step 2: Convert to fraction form
    636.62/882.34 = 624.96/x
  3. Step 3: Cross multiply
    636.62x = 882.34 × 624.96
  4. Step 4: Simplify right side
    636.62x = 551,425.64
  5. Step 5: Solve for x
    x = 551,425.64/636.62
  6. Step 6: Final answer
    x = 866.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.