Finding the Fourth Proportional to 214.81, 322.19 and 84.77
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Solution
The fourth proportional to 214.81, 322.19 and 84.77 is: 127.15
Step by Step Solution
- Step 1: Write the proportion equation
214.81 : 322.19 = 84.77 : x - Step 2: Convert to fraction form
214.81/322.19 = 84.77/x - Step 3: Cross multiply
214.81x = 322.19 × 84.77 - Step 4: Simplify right side
214.81x = 27,312.05 - Step 5: Solve for x
x = 27,312.05/214.81 - Step 6: Final answer
x = 127.15
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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.