Finding the Fourth Proportional to 316.76, 474.97 and 149.81
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Solution
The fourth proportional to 316.76, 474.97 and 149.81 is: 224.63
Step by Step Solution
- Step 1: Write the proportion equation
316.76 : 474.97 = 149.81 : x - Step 2: Convert to fraction form
316.76/474.97 = 149.81/x - Step 3: Cross multiply
316.76x = 474.97 × 149.81 - Step 4: Simplify right side
316.76x = 71,152.13 - Step 5: Solve for x
x = 71,152.13/316.76 - Step 6: Final answer
x = 224.63
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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.