Finding the Fourth Proportional to 316.36, 474.68 and 263.68
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Solution
The fourth proportional to 316.36, 474.68 and 263.68 is: 395.64
Step by Step Solution
- Step 1: Write the proportion equation
316.36 : 474.68 = 263.68 : x - Step 2: Convert to fraction form
316.36/474.68 = 263.68/x - Step 3: Cross multiply
316.36x = 474.68 × 263.68 - Step 4: Simplify right side
316.36x = 125,163.62 - Step 5: Solve for x
x = 125,163.62/316.36 - Step 6: Final answer
x = 395.64
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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.