Finding the Fourth Proportional to 218.18, 300.99 and 135.26
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Solution
The fourth proportional to 218.18, 300.99 and 135.26 is: 186.60
Step by Step Solution
- Step 1: Write the proportion equation
218.18 : 300.99 = 135.26 : x - Step 2: Convert to fraction form
218.18/300.99 = 135.26/x - Step 3: Cross multiply
218.18x = 300.99 × 135.26 - Step 4: Simplify right side
218.18x = 40,710.40 - Step 5: Solve for x
x = 40,710.40/218.18 - Step 6: Final answer
x = 186.60
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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.