Finding the Fourth Proportional to 115.79, 159.84 and 88.23
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Solution
The fourth proportional to 115.79, 159.84 and 88.23 is: 121.80
Step by Step Solution
- Step 1: Write the proportion equation
115.79 : 159.84 = 88.23 : x - Step 2: Convert to fraction form
115.79/159.84 = 88.23/x - Step 3: Cross multiply
115.79x = 159.84 × 88.23 - Step 4: Simplify right side
115.79x = 14,102.68 - Step 5: Solve for x
x = 14,102.68/115.79 - Step 6: Final answer
x = 121.80
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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.