Finding the Fourth Proportional to 85.36, 117.88 and 60.84
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Solution
The fourth proportional to 85.36, 117.88 and 60.84 is: 84.02
Step by Step Solution
- Step 1: Write the proportion equation
85.36 : 117.88 = 60.84 : x - Step 2: Convert to fraction form
85.36/117.88 = 60.84/x - Step 3: Cross multiply
85.36x = 117.88 × 60.84 - Step 4: Simplify right side
85.36x = 7,171.82 - Step 5: Solve for x
x = 7,171.82/85.36 - Step 6: Final answer
x = 84.02
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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.