Finding the Fourth Proportional to 84.96, 117.12 and 58.68
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Solution
The fourth proportional to 84.96, 117.12 and 58.68 is: 80.89
Step by Step Solution
- Step 1: Write the proportion equation
84.96 : 117.12 = 58.68 : x - Step 2: Convert to fraction form
84.96/117.12 = 58.68/x - Step 3: Cross multiply
84.96x = 117.12 × 58.68 - Step 4: Simplify right side
84.96x = 6,872.60 - Step 5: Solve for x
x = 6,872.60/84.96 - Step 6: Final answer
x = 80.89
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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.