Finding the Fourth Proportional to 71.22, 106.73 and 54.05
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Solution
The fourth proportional to 71.22, 106.73 and 54.05 is: 80.99
Step by Step Solution
- Step 1: Write the proportion equation
71.22 : 106.73 = 54.05 : x - Step 2: Convert to fraction form
71.22/106.73 = 54.05/x - Step 3: Cross multiply
71.22x = 106.73 × 54.05 - Step 4: Simplify right side
71.22x = 5,768.16 - Step 5: Solve for x
x = 5,768.16/71.22 - Step 6: Final answer
x = 80.99
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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.