Finding the Fourth Proportional to 98.67, 148.11 and 84.99
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Solution
The fourth proportional to 98.67, 148.11 and 84.99 is: 127.58
Step by Step Solution
- Step 1: Write the proportion equation
98.67 : 148.11 = 84.99 : x - Step 2: Convert to fraction form
98.67/148.11 = 84.99/x - Step 3: Cross multiply
98.67x = 148.11 × 84.99 - Step 4: Simplify right side
98.67x = 12,587.87 - Step 5: Solve for x
x = 12,587.87/98.67 - Step 6: Final answer
x = 127.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.