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Finding the Fourth Proportional to 371.88, 512.66 and 266.92

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Solution

The fourth proportional to 371.88, 512.66 and 266.92 is: 367.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.88 : 512.66 = 266.92 : x
  2. Step 2: Convert to fraction form
    371.88/512.66 = 266.92/x
  3. Step 3: Cross multiply
    371.88x = 512.66 × 266.92
  4. Step 4: Simplify right side
    371.88x = 136,839.21
  5. Step 5: Solve for x
    x = 136,839.21/371.88
  6. Step 6: Final answer
    x = 367.97

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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.