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Finding the Fourth Proportional to 158.95, 237.47 and 131.68

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Solution

The fourth proportional to 158.95, 237.47 and 131.68 is: 196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.95 : 237.47 = 131.68 : x
  2. Step 2: Convert to fraction form
    158.95/237.47 = 131.68/x
  3. Step 3: Cross multiply
    158.95x = 237.47 × 131.68
  4. Step 4: Simplify right side
    158.95x = 31,270.05
  5. Step 5: Solve for x
    x = 31,270.05/158.95
  6. Step 6: Final answer
    x = 196.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.