Finding the Fourth Proportional to 438.08, 655.68 and 307.92
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Solution
The fourth proportional to 438.08, 655.68 and 307.92 is: 460.87
Step by Step Solution
- Step 1: Write the proportion equation
438.08 : 655.68 = 307.92 : x - Step 2: Convert to fraction form
438.08/655.68 = 307.92/x - Step 3: Cross multiply
438.08x = 655.68 × 307.92 - Step 4: Simplify right side
438.08x = 201,896.99 - Step 5: Solve for x
x = 201,896.99/438.08 - Step 6: Final answer
x = 460.87
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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.