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Finding the Fourth Proportional to 299.07, 447.91 and 207.83

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Solution

The fourth proportional to 299.07, 447.91 and 207.83 is: 311.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.07 : 447.91 = 207.83 : x
  2. Step 2: Convert to fraction form
    299.07/447.91 = 207.83/x
  3. Step 3: Cross multiply
    299.07x = 447.91 × 207.83
  4. Step 4: Simplify right side
    299.07x = 93,089.74
  5. Step 5: Solve for x
    x = 93,089.74/299.07
  6. Step 6: Final answer
    x = 311.26

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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.