Finding the Fourth Proportional to 35.36, 48.72 and 30.96
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Solution
The fourth proportional to 35.36, 48.72 and 30.96 is: 42.65
Step by Step Solution
- Step 1: Write the proportion equation
35.36 : 48.72 = 30.96 : x - Step 2: Convert to fraction form
35.36/48.72 = 30.96/x - Step 3: Cross multiply
35.36x = 48.72 × 30.96 - Step 4: Simplify right side
35.36x = 1,508.13 - Step 5: Solve for x
x = 1,508.13/35.36 - Step 6: Final answer
x = 42.65
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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.