Finding the Fourth Proportional to 93.44, 140.74 and 80.88
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Solution
The fourth proportional to 93.44, 140.74 and 80.88 is: 121.82
Step by Step Solution
- Step 1: Write the proportion equation
93.44 : 140.74 = 80.88 : x - Step 2: Convert to fraction form
93.44/140.74 = 80.88/x - Step 3: Cross multiply
93.44x = 140.74 × 80.88 - Step 4: Simplify right side
93.44x = 11,383.05 - Step 5: Solve for x
x = 11,383.05/93.44 - Step 6: Final answer
x = 121.82
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.