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Finding the Fourth Proportional to 636.58, 882.80 and 616.60

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Solution

The fourth proportional to 636.58, 882.80 and 616.60 is: 855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.58 : 882.80 = 616.60 : x
  2. Step 2: Convert to fraction form
    636.58/882.80 = 616.60/x
  3. Step 3: Cross multiply
    636.58x = 882.80 × 616.60
  4. Step 4: Simplify right side
    636.58x = 544,334.48
  5. Step 5: Solve for x
    x = 544,334.48/636.58
  6. Step 6: Final answer
    x = 855.09

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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.