Finding the Fourth Proportional to 398.56, 549.98 and 223.92
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Solution
The fourth proportional to 398.56, 549.98 and 223.92 is: 308.99
Step by Step Solution
- Step 1: Write the proportion equation
398.56 : 549.98 = 223.92 : x - Step 2: Convert to fraction form
398.56/549.98 = 223.92/x - Step 3: Cross multiply
398.56x = 549.98 × 223.92 - Step 4: Simplify right side
398.56x = 123,151.52 - Step 5: Solve for x
x = 123,151.52/398.56 - Step 6: Final answer
x = 308.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.