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Finding the Fourth Proportional to 636.14, 882.36 and 619.28

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Solution

The fourth proportional to 636.14, 882.36 and 619.28 is: 858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.14 : 882.36 = 619.28 : x
  2. Step 2: Convert to fraction form
    636.14/882.36 = 619.28/x
  3. Step 3: Cross multiply
    636.14x = 882.36 × 619.28
  4. Step 4: Simplify right side
    636.14x = 546,427.90
  5. Step 5: Solve for x
    x = 546,427.90/636.14
  6. Step 6: Final answer
    x = 858.97

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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.