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Finding the Fourth Proportional to 207.83, 311.99 and 116.64

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Solution

The fourth proportional to 207.83, 311.99 and 116.64 is: 175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.83 : 311.99 = 116.64 : x
  2. Step 2: Convert to fraction form
    207.83/311.99 = 116.64/x
  3. Step 3: Cross multiply
    207.83x = 311.99 × 116.64
  4. Step 4: Simplify right side
    207.83x = 36,389.93
  5. Step 5: Solve for x
    x = 36,389.93/207.83
  6. Step 6: Final answer
    x = 175.09

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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.