Finding the Fourth Proportional to 84.95, 117.12 and 58.68
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Solution
The fourth proportional to 84.95, 117.12 and 58.68 is: 80.90
Step by Step Solution
- Step 1: Write the proportion equation
84.95 : 117.12 = 58.68 : x - Step 2: Convert to fraction form
84.95/117.12 = 58.68/x - Step 3: Cross multiply
84.95x = 117.12 × 58.68 - Step 4: Simplify right side
84.95x = 6,872.82 - Step 5: Solve for x
x = 6,872.82/84.95 - Step 6: Final answer
x = 80.90
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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.