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Finding the Fourth Proportional to 94.67, 141.38 and 79.45

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Solution

The fourth proportional to 94.67, 141.38 and 79.45 is: 118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.67 : 141.38 = 79.45 : x
  2. Step 2: Convert to fraction form
    94.67/141.38 = 79.45/x
  3. Step 3: Cross multiply
    94.67x = 141.38 × 79.45
  4. Step 4: Simplify right side
    94.67x = 11,232.19
  5. Step 5: Solve for x
    x = 11,232.19/94.67
  6. Step 6: Final answer
    x = 118.65

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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.