Finding the Fourth Proportional to 97.92, 135.09 and 68.79
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Solution
The fourth proportional to 97.92, 135.09 and 68.79 is: 94.90
Step by Step Solution
- Step 1: Write the proportion equation
97.92 : 135.09 = 68.79 : x - Step 2: Convert to fraction form
97.92/135.09 = 68.79/x - Step 3: Cross multiply
97.92x = 135.09 × 68.79 - Step 4: Simplify right side
97.92x = 9,292.84 - Step 5: Solve for x
x = 9,292.84/97.92 - Step 6: Final answer
x = 94.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.