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Finding the Fourth Proportional to 524.28, 786.45 and 199.62

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Solution

The fourth proportional to 524.28, 786.45 and 199.62 is: 299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.28 : 786.45 = 199.62 : x
  2. Step 2: Convert to fraction form
    524.28/786.45 = 199.62/x
  3. Step 3: Cross multiply
    524.28x = 786.45 × 199.62
  4. Step 4: Simplify right side
    524.28x = 156,991.15
  5. Step 5: Solve for x
    x = 156,991.15/524.28
  6. Step 6: Final answer
    x = 299.44

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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.