Finding the Fourth Proportional to 317.57, 438.08 and 267.08
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Solution
The fourth proportional to 317.57, 438.08 and 267.08 is: 368.42
Step by Step Solution
- Step 1: Write the proportion equation
317.57 : 438.08 = 267.08 : x - Step 2: Convert to fraction form
317.57/438.08 = 267.08/x - Step 3: Cross multiply
317.57x = 438.08 × 267.08 - Step 4: Simplify right side
317.57x = 116,998.88 - Step 5: Solve for x
x = 116,998.88/317.57 - Step 6: Final answer
x = 368.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.