Finding the Fourth Proportional to 84, 126.02 and 27
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Solution
The fourth proportional to 84, 126.02 and 27 is: 40.51
Step by Step Solution
- Step 1: Write the proportion equation
84 : 126.02 = 27 : x - Step 2: Convert to fraction form
84/126.02 = 27/x - Step 3: Cross multiply
84x = 126.02 × 27 - Step 4: Simplify right side
84x = 3,402.54 - Step 5: Solve for x
x = 3,402.54/84 - Step 6: Final answer
x = 40.51
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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.