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Finding the Fourth Proportional to 300.25, 450.51 and 191.98

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Solution

The fourth proportional to 300.25, 450.51 and 191.98 is: 288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.25 : 450.51 = 191.98 : x
  2. Step 2: Convert to fraction form
    300.25/450.51 = 191.98/x
  3. Step 3: Cross multiply
    300.25x = 450.51 × 191.98
  4. Step 4: Simplify right side
    300.25x = 86,488.91
  5. Step 5: Solve for x
    x = 86,488.91/300.25
  6. Step 6: Final answer
    x = 288.06

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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.