Finding the Fourth Proportional to 655.91, 905.18 and 361.20
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Solution
The fourth proportional to 655.91, 905.18 and 361.20 is: 498.46
Step by Step Solution
- Step 1: Write the proportion equation
655.91 : 905.18 = 361.20 : x - Step 2: Convert to fraction form
655.91/905.18 = 361.20/x - Step 3: Cross multiply
655.91x = 905.18 × 361.20 - Step 4: Simplify right side
655.91x = 326,946.24 - Step 5: Solve for x
x = 326,946.24/655.91 - Step 6: Final answer
x = 498.46
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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.