Finding the Fourth Proportional to 316.87, 474.99 and 154.46
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Solution
The fourth proportional to 316.87, 474.99 and 154.46 is: 231.54
Step by Step Solution
- Step 1: Write the proportion equation
316.87 : 474.99 = 154.46 : x - Step 2: Convert to fraction form
316.87/474.99 = 154.46/x - Step 3: Cross multiply
316.87x = 474.99 × 154.46 - Step 4: Simplify right side
316.87x = 73,366.96 - Step 5: Solve for x
x = 73,366.96/316.87 - Step 6: Final answer
x = 231.54
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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.