Finding the Fourth Proportional to 145.84, 218.69 and 84.99
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Solution
The fourth proportional to 145.84, 218.69 and 84.99 is: 127.44
Step by Step Solution
- Step 1: Write the proportion equation
145.84 : 218.69 = 84.99 : x - Step 2: Convert to fraction form
145.84/218.69 = 84.99/x - Step 3: Cross multiply
145.84x = 218.69 × 84.99 - Step 4: Simplify right side
145.84x = 18,586.46 - Step 5: Solve for x
x = 18,586.46/145.84 - Step 6: Final answer
x = 127.44
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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.