Finding the Fourth Proportional to 464.26, 640.69 and 257.26
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Solution
The fourth proportional to 464.26, 640.69 and 257.26 is: 355.03
Step by Step Solution
- Step 1: Write the proportion equation
464.26 : 640.69 = 257.26 : x - Step 2: Convert to fraction form
464.26/640.69 = 257.26/x - Step 3: Cross multiply
464.26x = 640.69 × 257.26 - Step 4: Simplify right side
464.26x = 164,823.91 - Step 5: Solve for x
x = 164,823.91/464.26 - Step 6: Final answer
x = 355.03
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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.