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Finding the Fourth Proportional to 94.76, 130.62 and 83.76

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Solution

The fourth proportional to 94.76, 130.62 and 83.76 is: 115.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.76 : 130.62 = 83.76 : x
  2. Step 2: Convert to fraction form
    94.76/130.62 = 83.76/x
  3. Step 3: Cross multiply
    94.76x = 130.62 × 83.76
  4. Step 4: Simplify right side
    94.76x = 10,940.73
  5. Step 5: Solve for x
    x = 10,940.73/94.76
  6. Step 6: Final answer
    x = 115.46

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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.