Finding the Fourth Proportional to 98.08, 135.18 and 68.92
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Solution
The fourth proportional to 98.08, 135.18 and 68.92 is: 94.99
Step by Step Solution
- Step 1: Write the proportion equation
98.08 : 135.18 = 68.92 : x - Step 2: Convert to fraction form
98.08/135.18 = 68.92/x - Step 3: Cross multiply
98.08x = 135.18 × 68.92 - Step 4: Simplify right side
98.08x = 9,316.61 - Step 5: Solve for x
x = 9,316.61/98.08 - Step 6: Final answer
x = 94.99
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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.