Finding the Fourth Proportional to 68.40, 94.26 and 58.68
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Solution
The fourth proportional to 68.40, 94.26 and 58.68 is: 80.87
Step by Step Solution
- Step 1: Write the proportion equation
68.40 : 94.26 = 58.68 : x - Step 2: Convert to fraction form
68.40/94.26 = 58.68/x - Step 3: Cross multiply
68.40x = 94.26 × 58.68 - Step 4: Simplify right side
68.40x = 5,531.18 - Step 5: Solve for x
x = 5,531.18/68.40 - Step 6: Final answer
x = 80.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.