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Finding the Fourth Proportional to 610.36, 915.54 and 199.54

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Solution

The fourth proportional to 610.36, 915.54 and 199.54 is: 299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.36 : 915.54 = 199.54 : x
  2. Step 2: Convert to fraction form
    610.36/915.54 = 199.54/x
  3. Step 3: Cross multiply
    610.36x = 915.54 × 199.54
  4. Step 4: Simplify right side
    610.36x = 182,686.85
  5. Step 5: Solve for x
    x = 182,686.85/610.36
  6. Step 6: Final answer
    x = 299.31

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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.