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Finding the Fourth Proportional to 610.29, 915.13 and 199.38

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Solution

The fourth proportional to 610.29, 915.13 and 199.38 is: 298.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.29 : 915.13 = 199.38 : x
  2. Step 2: Convert to fraction form
    610.29/915.13 = 199.38/x
  3. Step 3: Cross multiply
    610.29x = 915.13 × 199.38
  4. Step 4: Simplify right side
    610.29x = 182,458.62
  5. Step 5: Solve for x
    x = 182,458.62/610.29
  6. Step 6: Final answer
    x = 298.97

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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.