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Finding the Fourth Proportional to 237.97, 356.75 and 91.64

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Solution

The fourth proportional to 237.97, 356.75 and 91.64 is: 137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.97 : 356.75 = 91.64 : x
  2. Step 2: Convert to fraction form
    237.97/356.75 = 91.64/x
  3. Step 3: Cross multiply
    237.97x = 356.75 × 91.64
  4. Step 4: Simplify right side
    237.97x = 32,692.57
  5. Step 5: Solve for x
    x = 32,692.57/237.97
  6. Step 6: Final answer
    x = 137.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.