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Finding the Fourth Proportional to 610.49, 915.43 and 199.57

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Solution

The fourth proportional to 610.49, 915.43 and 199.57 is: 299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.49 : 915.43 = 199.57 : x
  2. Step 2: Convert to fraction form
    610.49/915.43 = 199.57/x
  3. Step 3: Cross multiply
    610.49x = 915.43 × 199.57
  4. Step 4: Simplify right side
    610.49x = 182,692.37
  5. Step 5: Solve for x
    x = 182,692.37/610.49
  6. Step 6: Final answer
    x = 299.26

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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.