Finding the Fourth Proportional to 428.67, 591.21 and 297.68
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Solution
The fourth proportional to 428.67, 591.21 and 297.68 is: 410.55
Step by Step Solution
- Step 1: Write the proportion equation
428.67 : 591.21 = 297.68 : x - Step 2: Convert to fraction form
428.67/591.21 = 297.68/x - Step 3: Cross multiply
428.67x = 591.21 × 297.68 - Step 4: Simplify right side
428.67x = 175,988.44 - Step 5: Solve for x
x = 175,988.44/428.67 - Step 6: Final answer
x = 410.55
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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.