Finding the Fourth Proportional to 357.21, 492.99 and 201.96
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Solution
The fourth proportional to 357.21, 492.99 and 201.96 is: 278.73
Step by Step Solution
- Step 1: Write the proportion equation
357.21 : 492.99 = 201.96 : x - Step 2: Convert to fraction form
357.21/492.99 = 201.96/x - Step 3: Cross multiply
357.21x = 492.99 × 201.96 - Step 4: Simplify right side
357.21x = 99,564.26 - Step 5: Solve for x
x = 99,564.26/357.21 - Step 6: Final answer
x = 278.73
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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.