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Finding the Fourth Proportional to 610.32, 915.68 and 199.47

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Solution

The fourth proportional to 610.32, 915.68 and 199.47 is: 299.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.32 : 915.68 = 199.47 : x
  2. Step 2: Convert to fraction form
    610.32/915.68 = 199.47/x
  3. Step 3: Cross multiply
    610.32x = 915.68 × 199.47
  4. Step 4: Simplify right side
    610.32x = 182,650.69
  5. Step 5: Solve for x
    x = 182,650.69/610.32
  6. Step 6: Final answer
    x = 299.27

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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.