Finding the Fourth Proportional to 316.44, 474.21 and 133.65
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Solution
The fourth proportional to 316.44, 474.21 and 133.65 is: 200.28
Step by Step Solution
- Step 1: Write the proportion equation
316.44 : 474.21 = 133.65 : x - Step 2: Convert to fraction form
316.44/474.21 = 133.65/x - Step 3: Cross multiply
316.44x = 474.21 × 133.65 - Step 4: Simplify right side
316.44x = 63,378.17 - Step 5: Solve for x
x = 63,378.17/316.44 - Step 6: Final answer
x = 200.28
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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.