Finding the Fourth Proportional to 317.44, 476.16 and 221.76
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Solution
The fourth proportional to 317.44, 476.16 and 221.76 is: 332.64
Step by Step Solution
- Step 1: Write the proportion equation
317.44 : 476.16 = 221.76 : x - Step 2: Convert to fraction form
317.44/476.16 = 221.76/x - Step 3: Cross multiply
317.44x = 476.16 × 221.76 - Step 4: Simplify right side
317.44x = 105,593.24 - Step 5: Solve for x
x = 105,593.24/317.44 - Step 6: Final answer
x = 332.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.