Finding the Fourth Proportional to 45.80, 63.18 and 31.96
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Solution
The fourth proportional to 45.80, 63.18 and 31.96 is: 44.09
Step by Step Solution
- Step 1: Write the proportion equation
45.80 : 63.18 = 31.96 : x - Step 2: Convert to fraction form
45.80/63.18 = 31.96/x - Step 3: Cross multiply
45.80x = 63.18 × 31.96 - Step 4: Simplify right side
45.80x = 2,019.23 - Step 5: Solve for x
x = 2,019.23/45.80 - Step 6: Final answer
x = 44.09
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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.