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Finding the Fourth Proportional to 615.32, 850.06 and 475.80

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Solution

The fourth proportional to 615.32, 850.06 and 475.80 is: 657.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.32 : 850.06 = 475.80 : x
  2. Step 2: Convert to fraction form
    615.32/850.06 = 475.80/x
  3. Step 3: Cross multiply
    615.32x = 850.06 × 475.80
  4. Step 4: Simplify right side
    615.32x = 404,458.55
  5. Step 5: Solve for x
    x = 404,458.55/615.32
  6. Step 6: Final answer
    x = 657.31

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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.