Finding the Fourth Proportional to 68.44, 94.44 and 47.68
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Solution
The fourth proportional to 68.44, 94.44 and 47.68 is: 65.79
Step by Step Solution
- Step 1: Write the proportion equation
68.44 : 94.44 = 47.68 : x - Step 2: Convert to fraction form
68.44/94.44 = 47.68/x - Step 3: Cross multiply
68.44x = 94.44 × 47.68 - Step 4: Simplify right side
68.44x = 4,502.90 - Step 5: Solve for x
x = 4,502.90/68.44 - Step 6: Final answer
x = 65.79
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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.