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Finding the Fourth Proportional to 307.05, 423.93 and 236.97

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Solution

The fourth proportional to 307.05, 423.93 and 236.97 is: 327.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.05 : 423.93 = 236.97 : x
  2. Step 2: Convert to fraction form
    307.05/423.93 = 236.97/x
  3. Step 3: Cross multiply
    307.05x = 423.93 × 236.97
  4. Step 4: Simplify right side
    307.05x = 100,458.69
  5. Step 5: Solve for x
    x = 100,458.69/307.05
  6. Step 6: Final answer
    x = 327.17

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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.