Finding the Fourth Proportional to 61.40, 84.74 and 46.84
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Solution
The fourth proportional to 61.40, 84.74 and 46.84 is: 64.65
Step by Step Solution
- Step 1: Write the proportion equation
61.40 : 84.74 = 46.84 : x - Step 2: Convert to fraction form
61.40/84.74 = 46.84/x - Step 3: Cross multiply
61.40x = 84.74 × 46.84 - Step 4: Simplify right side
61.40x = 3,969.22 - Step 5: Solve for x
x = 3,969.22/61.40 - Step 6: Final answer
x = 64.65
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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.