Finding the Fourth Proportional to 158.18, 218.09 and 131.99
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Solution
The fourth proportional to 158.18, 218.09 and 131.99 is: 181.98
Step by Step Solution
- Step 1: Write the proportion equation
158.18 : 218.09 = 131.99 : x - Step 2: Convert to fraction form
158.18/218.09 = 131.99/x - Step 3: Cross multiply
158.18x = 218.09 × 131.99 - Step 4: Simplify right side
158.18x = 28,784.94 - Step 5: Solve for x
x = 28,784.94/158.18 - Step 6: Final answer
x = 181.98
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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.