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Finding the Fourth Proportional to 199.58, 299.29 and 96.83

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Solution

The fourth proportional to 199.58, 299.29 and 96.83 is: 145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.58 : 299.29 = 96.83 : x
  2. Step 2: Convert to fraction form
    199.58/299.29 = 96.83/x
  3. Step 3: Cross multiply
    199.58x = 299.29 × 96.83
  4. Step 4: Simplify right side
    199.58x = 28,980.25
  5. Step 5: Solve for x
    x = 28,980.25/199.58
  6. Step 6: Final answer
    x = 145.21

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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.