Finding the Fourth Proportional to 84.92, 117.40 and 84.14
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Solution
The fourth proportional to 84.92, 117.40 and 84.14 is: 116.32
Step by Step Solution
- Step 1: Write the proportion equation
84.92 : 117.40 = 84.14 : x - Step 2: Convert to fraction form
84.92/117.40 = 84.14/x - Step 3: Cross multiply
84.92x = 117.40 × 84.14 - Step 4: Simplify right side
84.92x = 9,878.12 - Step 5: Solve for x
x = 9,878.12/84.92 - Step 6: Final answer
x = 116.32
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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.