Finding the Fourth Proportional to 115.26, 159 and 68.61
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Solution
The fourth proportional to 115.26, 159 and 68.61 is: 94.65
Step by Step Solution
- Step 1: Write the proportion equation
115.26 : 159 = 68.61 : x - Step 2: Convert to fraction form
115.26/159 = 68.61/x - Step 3: Cross multiply
115.26x = 159 × 68.61 - Step 4: Simplify right side
115.26x = 10,908.99 - Step 5: Solve for x
x = 10,908.99/115.26 - Step 6: Final answer
x = 94.65
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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.