Finding the Fourth Proportional to 84.84, 117.07 and 47.99
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Solution
The fourth proportional to 84.84, 117.07 and 47.99 is: 66.22
Step by Step Solution
- Step 1: Write the proportion equation
84.84 : 117.07 = 47.99 : x - Step 2: Convert to fraction form
84.84/117.07 = 47.99/x - Step 3: Cross multiply
84.84x = 117.07 × 47.99 - Step 4: Simplify right side
84.84x = 5,618.19 - Step 5: Solve for x
x = 5,618.19/84.84 - Step 6: Final answer
x = 66.22
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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.