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Finding the Fourth Proportional to 94.74, 141.93 and 92.22

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Solution

The fourth proportional to 94.74, 141.93 and 92.22 is: 138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.74 : 141.93 = 92.22 : x
  2. Step 2: Convert to fraction form
    94.74/141.93 = 92.22/x
  3. Step 3: Cross multiply
    94.74x = 141.93 × 92.22
  4. Step 4: Simplify right side
    94.74x = 13,088.78
  5. Step 5: Solve for x
    x = 13,088.78/94.74
  6. Step 6: Final answer
    x = 138.15

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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.