Finding the Fourth Proportional to 316.92, 474.62 and 290.95
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Solution
The fourth proportional to 316.92, 474.62 and 290.95 is: 435.72
Step by Step Solution
- Step 1: Write the proportion equation
316.92 : 474.62 = 290.95 : x - Step 2: Convert to fraction form
316.92/474.62 = 290.95/x - Step 3: Cross multiply
316.92x = 474.62 × 290.95 - Step 4: Simplify right side
316.92x = 138,088.05 - Step 5: Solve for x
x = 138,088.05/316.92 - Step 6: Final answer
x = 435.72
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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.