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Finding the Fourth Proportional to 266.40, 367.68 and 168.20

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Solution

The fourth proportional to 266.40, 367.68 and 168.20 is: 232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.40 : 367.68 = 168.20 : x
  2. Step 2: Convert to fraction form
    266.40/367.68 = 168.20/x
  3. Step 3: Cross multiply
    266.40x = 367.68 × 168.20
  4. Step 4: Simplify right side
    266.40x = 61,841.94
  5. Step 5: Solve for x
    x = 61,841.94/266.40
  6. Step 6: Final answer
    x = 232.14

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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.