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Finding the Fourth Proportional to 199.58, 299.07 and 96.74

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Solution

The fourth proportional to 199.58, 299.07 and 96.74 is: 144.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.58 : 299.07 = 96.74 : x
  2. Step 2: Convert to fraction form
    199.58/299.07 = 96.74/x
  3. Step 3: Cross multiply
    199.58x = 299.07 × 96.74
  4. Step 4: Simplify right side
    199.58x = 28,933.68
  5. Step 5: Solve for x
    x = 28,933.68/199.58
  6. Step 6: Final answer
    x = 144.98

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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.