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Finding the Fourth Proportional to 610.41, 915.69 and 199.60

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Solution

The fourth proportional to 610.41, 915.69 and 199.60 is: 299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.41 : 915.69 = 199.60 : x
  2. Step 2: Convert to fraction form
    610.41/915.69 = 199.60/x
  3. Step 3: Cross multiply
    610.41x = 915.69 × 199.60
  4. Step 4: Simplify right side
    610.41x = 182,770.18
  5. Step 5: Solve for x
    x = 182,770.18/610.41
  6. Step 6: Final answer
    x = 299.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.