Finding the Fourth Proportional to 481.45, 663.99 and 313.44
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Solution
The fourth proportional to 481.45, 663.99 and 313.44 is: 432.28
Step by Step Solution
- Step 1: Write the proportion equation
481.45 : 663.99 = 313.44 : x - Step 2: Convert to fraction form
481.45/663.99 = 313.44/x - Step 3: Cross multiply
481.45x = 663.99 × 313.44 - Step 4: Simplify right side
481.45x = 208,120.24 - Step 5: Solve for x
x = 208,120.24/481.45 - Step 6: Final answer
x = 432.28
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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.