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Finding the Fourth Proportional to 610.10, 915.17 and 199.28

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Solution

The fourth proportional to 610.10, 915.17 and 199.28 is: 298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.10 : 915.17 = 199.28 : x
  2. Step 2: Convert to fraction form
    610.10/915.17 = 199.28/x
  3. Step 3: Cross multiply
    610.10x = 915.17 × 199.28
  4. Step 4: Simplify right side
    610.10x = 182,374.08
  5. Step 5: Solve for x
    x = 182,374.08/610.10
  6. Step 6: Final answer
    x = 298.92

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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.