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Finding the Fourth Proportional to 150.82, 208.22 and 92.70

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Solution

The fourth proportional to 150.82, 208.22 and 92.70 is: 127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.82 : 208.22 = 92.70 : x
  2. Step 2: Convert to fraction form
    150.82/208.22 = 92.70/x
  3. Step 3: Cross multiply
    150.82x = 208.22 × 92.70
  4. Step 4: Simplify right side
    150.82x = 19,301.99
  5. Step 5: Solve for x
    x = 19,301.99/150.82
  6. Step 6: Final answer
    x = 127.98

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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.