Finding the Fourth Proportional to 316.70, 474.62 and 133.88
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Solution
The fourth proportional to 316.70, 474.62 and 133.88 is: 200.64
Step by Step Solution
- Step 1: Write the proportion equation
316.70 : 474.62 = 133.88 : x - Step 2: Convert to fraction form
316.70/474.62 = 133.88/x - Step 3: Cross multiply
316.70x = 474.62 × 133.88 - Step 4: Simplify right side
316.70x = 63,542.13 - Step 5: Solve for x
x = 63,542.13/316.70 - Step 6: Final answer
x = 200.64
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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.