Finding the Fourth Proportional to 84.71, 126.62 and 73.26
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Solution
The fourth proportional to 84.71, 126.62 and 73.26 is: 109.51
Step by Step Solution
- Step 1: Write the proportion equation
84.71 : 126.62 = 73.26 : x - Step 2: Convert to fraction form
84.71/126.62 = 73.26/x - Step 3: Cross multiply
84.71x = 126.62 × 73.26 - Step 4: Simplify right side
84.71x = 9,276.29 - Step 5: Solve for x
x = 9,276.29/84.71 - Step 6: Final answer
x = 109.51
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.