Finding the Fourth Proportional to 317.63, 438.36 and 177.77
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Solution
The fourth proportional to 317.63, 438.36 and 177.77 is: 245.34
Step by Step Solution
- Step 1: Write the proportion equation
317.63 : 438.36 = 177.77 : x - Step 2: Convert to fraction form
317.63/438.36 = 177.77/x - Step 3: Cross multiply
317.63x = 438.36 × 177.77 - Step 4: Simplify right side
317.63x = 77,925.07 - Step 5: Solve for x
x = 77,925.07/317.63 - Step 6: Final answer
x = 245.34
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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.