Finding the Fourth Proportional to 317.91, 438.75 and 193.55
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Solution
The fourth proportional to 317.91, 438.75 and 193.55 is: 267.12
Step by Step Solution
- Step 1: Write the proportion equation
317.91 : 438.75 = 193.55 : x - Step 2: Convert to fraction form
317.91/438.75 = 193.55/x - Step 3: Cross multiply
317.91x = 438.75 × 193.55 - Step 4: Simplify right side
317.91x = 84,919.09 - Step 5: Solve for x
x = 84,919.09/317.91 - Step 6: Final answer
x = 267.12
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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.