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Finding the Fourth Proportional to 304.38, 418.71 and 266.86

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Solution

The fourth proportional to 304.38, 418.71 and 266.86 is: 367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.38 : 418.71 = 266.86 : x
  2. Step 2: Convert to fraction form
    304.38/418.71 = 266.86/x
  3. Step 3: Cross multiply
    304.38x = 418.71 × 266.86
  4. Step 4: Simplify right side
    304.38x = 111,738.00
  5. Step 5: Solve for x
    x = 111,738.00/304.38
  6. Step 6: Final answer
    x = 367.11

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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.