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Finding the Fourth Proportional to 158.78, 237.99 and 97.73

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Solution

The fourth proportional to 158.78, 237.99 and 97.73 is: 146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.78 : 237.99 = 97.73 : x
  2. Step 2: Convert to fraction form
    158.78/237.99 = 97.73/x
  3. Step 3: Cross multiply
    158.78x = 237.99 × 97.73
  4. Step 4: Simplify right side
    158.78x = 23,258.76
  5. Step 5: Solve for x
    x = 23,258.76/158.78
  6. Step 6: Final answer
    x = 146.48

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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.