Finding the Fourth Proportional to 419.29, 628.92 and 158.99
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Solution
The fourth proportional to 419.29, 628.92 and 158.99 is: 238.48
Step by Step Solution
- Step 1: Write the proportion equation
419.29 : 628.92 = 158.99 : x - Step 2: Convert to fraction form
419.29/628.92 = 158.99/x - Step 3: Cross multiply
419.29x = 628.92 × 158.99 - Step 4: Simplify right side
419.29x = 99,991.99 - Step 5: Solve for x
x = 99,991.99/419.29 - Step 6: Final answer
x = 238.48
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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.