Finding the Fourth Proportional to 426.53, 639.99 and 243.98
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Solution
The fourth proportional to 426.53, 639.99 and 243.98 is: 366.09
Step by Step Solution
- Step 1: Write the proportion equation
426.53 : 639.99 = 243.98 : x - Step 2: Convert to fraction form
426.53/639.99 = 243.98/x - Step 3: Cross multiply
426.53x = 639.99 × 243.98 - Step 4: Simplify right side
426.53x = 156,146.36 - Step 5: Solve for x
x = 156,146.36/426.53 - Step 6: Final answer
x = 366.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.