Finding the Fourth Proportional to 46.62, 69.86 and 28.53
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Solution
The fourth proportional to 46.62, 69.86 and 28.53 is: 42.75
Step by Step Solution
- Step 1: Write the proportion equation
46.62 : 69.86 = 28.53 : x - Step 2: Convert to fraction form
46.62/69.86 = 28.53/x - Step 3: Cross multiply
46.62x = 69.86 × 28.53 - Step 4: Simplify right side
46.62x = 1,993.18 - Step 5: Solve for x
x = 1,993.18/46.62 - Step 6: Final answer
x = 42.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.