Finding the Fourth Proportional to 417.99, 626.79 and 129.36
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Solution
The fourth proportional to 417.99, 626.79 and 129.36 is: 193.98
Step by Step Solution
- Step 1: Write the proportion equation
417.99 : 626.79 = 129.36 : x - Step 2: Convert to fraction form
417.99/626.79 = 129.36/x - Step 3: Cross multiply
417.99x = 626.79 × 129.36 - Step 4: Simplify right side
417.99x = 81,081.55 - Step 5: Solve for x
x = 81,081.55/417.99 - Step 6: Final answer
x = 193.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.