Finding the Fourth Proportional to 61.35, 84.60 and 60.09
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Solution
The fourth proportional to 61.35, 84.60 and 60.09 is: 82.86
Step by Step Solution
- Step 1: Write the proportion equation
61.35 : 84.60 = 60.09 : x - Step 2: Convert to fraction form
61.35/84.60 = 60.09/x - Step 3: Cross multiply
61.35x = 84.60 × 60.09 - Step 4: Simplify right side
61.35x = 5,083.61 - Step 5: Solve for x
x = 5,083.61/61.35 - Step 6: Final answer
x = 82.86
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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.