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Finding the Fourth Proportional to 207.41, 311.13 and 97.69

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Solution

The fourth proportional to 207.41, 311.13 and 97.69 is: 146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.41 : 311.13 = 97.69 : x
  2. Step 2: Convert to fraction form
    207.41/311.13 = 97.69/x
  3. Step 3: Cross multiply
    207.41x = 311.13 × 97.69
  4. Step 4: Simplify right side
    207.41x = 30,394.29
  5. Step 5: Solve for x
    x = 30,394.29/207.41
  6. Step 6: Final answer
    x = 146.54

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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.