Finding the Fourth Proportional to 317.73, 438.45 and 177.87
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Solution
The fourth proportional to 317.73, 438.45 and 177.87 is: 245.45
Step by Step Solution
- Step 1: Write the proportion equation
317.73 : 438.45 = 177.87 : x - Step 2: Convert to fraction form
317.73/438.45 = 177.87/x - Step 3: Cross multiply
317.73x = 438.45 × 177.87 - Step 4: Simplify right side
317.73x = 77,988.08 - Step 5: Solve for x
x = 77,988.08/317.73 - Step 6: Final answer
x = 245.45
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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.