Finding the Fourth Proportional to 108.48, 163.06 and 87.08
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Solution
The fourth proportional to 108.48, 163.06 and 87.08 is: 130.89
Step by Step Solution
- Step 1: Write the proportion equation
108.48 : 163.06 = 87.08 : x - Step 2: Convert to fraction form
108.48/163.06 = 87.08/x - Step 3: Cross multiply
108.48x = 163.06 × 87.08 - Step 4: Simplify right side
108.48x = 14,199.26 - Step 5: Solve for x
x = 14,199.26/108.48 - Step 6: Final answer
x = 130.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.