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Finding the Fourth Proportional to 245.40, 367.71 and 168.09

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Solution

The fourth proportional to 245.40, 367.71 and 168.09 is: 251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.40 : 367.71 = 168.09 : x
  2. Step 2: Convert to fraction form
    245.40/367.71 = 168.09/x
  3. Step 3: Cross multiply
    245.40x = 367.71 × 168.09
  4. Step 4: Simplify right side
    245.40x = 61,808.37
  5. Step 5: Solve for x
    x = 61,808.37/245.40
  6. Step 6: Final answer
    x = 251.87

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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.