Finding the Fourth Proportional to 455.79, 629.24 and 300.99
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Solution
The fourth proportional to 455.79, 629.24 and 300.99 is: 415.53
Step by Step Solution
- Step 1: Write the proportion equation
455.79 : 629.24 = 300.99 : x - Step 2: Convert to fraction form
455.79/629.24 = 300.99/x - Step 3: Cross multiply
455.79x = 629.24 × 300.99 - Step 4: Simplify right side
455.79x = 189,392.55 - Step 5: Solve for x
x = 189,392.55/455.79 - Step 6: Final answer
x = 415.53
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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.