Finding the Fourth Proportional to 84.94, 117.19 and 64.26
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Solution
The fourth proportional to 84.94, 117.19 and 64.26 is: 88.66
Step by Step Solution
- Step 1: Write the proportion equation
84.94 : 117.19 = 64.26 : x - Step 2: Convert to fraction form
84.94/117.19 = 64.26/x - Step 3: Cross multiply
84.94x = 117.19 × 64.26 - Step 4: Simplify right side
84.94x = 7,530.63 - Step 5: Solve for x
x = 7,530.63/84.94 - Step 6: Final answer
x = 88.66
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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.