Finding the Fourth Proportional to 43.68, 60.18 and 30.72
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Solution
The fourth proportional to 43.68, 60.18 and 30.72 is: 42.32
Step by Step Solution
- Step 1: Write the proportion equation
43.68 : 60.18 = 30.72 : x - Step 2: Convert to fraction form
43.68/60.18 = 30.72/x - Step 3: Cross multiply
43.68x = 60.18 × 30.72 - Step 4: Simplify right side
43.68x = 1,848.73 - Step 5: Solve for x
x = 1,848.73/43.68 - Step 6: Final answer
x = 42.32
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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.