Finding the Fourth Proportional to 84.93, 117.19 and 47.58
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Solution
The fourth proportional to 84.93, 117.19 and 47.58 is: 65.65
Step by Step Solution
- Step 1: Write the proportion equation
84.93 : 117.19 = 47.58 : x - Step 2: Convert to fraction form
84.93/117.19 = 47.58/x - Step 3: Cross multiply
84.93x = 117.19 × 47.58 - Step 4: Simplify right side
84.93x = 5,575.90 - Step 5: Solve for x
x = 5,575.90/84.93 - Step 6: Final answer
x = 65.65
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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.