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Finding the Fourth Proportional to 615.82, 850.44 and 484.60

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Solution

The fourth proportional to 615.82, 850.44 and 484.60 is: 669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.82 : 850.44 = 484.60 : x
  2. Step 2: Convert to fraction form
    615.82/850.44 = 484.60/x
  3. Step 3: Cross multiply
    615.82x = 850.44 × 484.60
  4. Step 4: Simplify right side
    615.82x = 412,123.22
  5. Step 5: Solve for x
    x = 412,123.22/615.82
  6. Step 6: Final answer
    x = 669.23

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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.