Finding the Fourth Proportional to 397.99, 549.21 and 220.95
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Solution
The fourth proportional to 397.99, 549.21 and 220.95 is: 304.91
Step by Step Solution
- Step 1: Write the proportion equation
397.99 : 549.21 = 220.95 : x - Step 2: Convert to fraction form
397.99/549.21 = 220.95/x - Step 3: Cross multiply
397.99x = 549.21 × 220.95 - Step 4: Simplify right side
397.99x = 121,348.99 - Step 5: Solve for x
x = 121,348.99/397.99 - Step 6: Final answer
x = 304.91
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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.