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Finding the Fourth Proportional to 508.43, 762.36 and 199.93

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Solution

The fourth proportional to 508.43, 762.36 and 199.93 is: 299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.43 : 762.36 = 199.93 : x
  2. Step 2: Convert to fraction form
    508.43/762.36 = 199.93/x
  3. Step 3: Cross multiply
    508.43x = 762.36 × 199.93
  4. Step 4: Simplify right side
    508.43x = 152,416.73
  5. Step 5: Solve for x
    x = 152,416.73/508.43
  6. Step 6: Final answer
    x = 299.78

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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.