Finding the Fourth Proportional to 356.44, 491.74 and 216.44
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Solution
The fourth proportional to 356.44, 491.74 and 216.44 is: 298.60
Step by Step Solution
- Step 1: Write the proportion equation
356.44 : 491.74 = 216.44 : x - Step 2: Convert to fraction form
356.44/491.74 = 216.44/x - Step 3: Cross multiply
356.44x = 491.74 × 216.44 - Step 4: Simplify right side
356.44x = 106,432.21 - Step 5: Solve for x
x = 106,432.21/356.44 - Step 6: Final answer
x = 298.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.