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Finding the Fourth Proportional to 299.09, 412.76 and 168.10

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Solution

The fourth proportional to 299.09, 412.76 and 168.10 is: 231.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.09 : 412.76 = 168.10 : x
  2. Step 2: Convert to fraction form
    299.09/412.76 = 168.10/x
  3. Step 3: Cross multiply
    299.09x = 412.76 × 168.10
  4. Step 4: Simplify right side
    299.09x = 69,384.34
  5. Step 5: Solve for x
    x = 69,384.34/299.09
  6. Step 6: Final answer
    x = 231.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.