Finding the Fourth Proportional to 71.36, 106.97 and 25.68
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Solution
The fourth proportional to 71.36, 106.97 and 25.68 is: 38.50
Step by Step Solution
- Step 1: Write the proportion equation
71.36 : 106.97 = 25.68 : x - Step 2: Convert to fraction form
71.36/106.97 = 25.68/x - Step 3: Cross multiply
71.36x = 106.97 × 25.68 - Step 4: Simplify right side
71.36x = 2,747.26 - Step 5: Solve for x
x = 2,747.26/71.36 - Step 6: Final answer
x = 38.50
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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.