Finding the Fourth Proportional to 115.26, 159.14 and 88.99
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Solution
The fourth proportional to 115.26, 159.14 and 88.99 is: 122.87
Step by Step Solution
- Step 1: Write the proportion equation
115.26 : 159.14 = 88.99 : x - Step 2: Convert to fraction form
115.26/159.14 = 88.99/x - Step 3: Cross multiply
115.26x = 159.14 × 88.99 - Step 4: Simplify right side
115.26x = 14,161.87 - Step 5: Solve for x
x = 14,161.87/115.26 - Step 6: Final answer
x = 122.87
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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.