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Finding the Fourth Proportional to 615.39, 850.32 and 504.78

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Solution

The fourth proportional to 615.39, 850.32 and 504.78 is: 697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.39 : 850.32 = 504.78 : x
  2. Step 2: Convert to fraction form
    615.39/850.32 = 504.78/x
  3. Step 3: Cross multiply
    615.39x = 850.32 × 504.78
  4. Step 4: Simplify right side
    615.39x = 429,224.53
  5. Step 5: Solve for x
    x = 429,224.53/615.39
  6. Step 6: Final answer
    x = 697.48

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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.