Finding the Fourth Proportional to 108.24, 162.36 and 87.99
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Solution
The fourth proportional to 108.24, 162.36 and 87.99 is: 131.99
Step by Step Solution
- Step 1: Write the proportion equation
108.24 : 162.36 = 87.99 : x - Step 2: Convert to fraction form
108.24/162.36 = 87.99/x - Step 3: Cross multiply
108.24x = 162.36 × 87.99 - Step 4: Simplify right side
108.24x = 14,286.06 - Step 5: Solve for x
x = 14,286.06/108.24 - Step 6: Final answer
x = 131.99
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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.