Finding the Fourth Proportional to 86.08, 118.68 and 58.44
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Solution
The fourth proportional to 86.08, 118.68 and 58.44 is: 80.57
Step by Step Solution
- Step 1: Write the proportion equation
86.08 : 118.68 = 58.44 : x - Step 2: Convert to fraction form
86.08/118.68 = 58.44/x - Step 3: Cross multiply
86.08x = 118.68 × 58.44 - Step 4: Simplify right side
86.08x = 6,935.66 - Step 5: Solve for x
x = 6,935.66/86.08 - Step 6: Final answer
x = 80.57
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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.