Finding the Fourth Proportional to 418.23, 627.44 and 129.67
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Solution
The fourth proportional to 418.23, 627.44 and 129.67 is: 194.53
Step by Step Solution
- Step 1: Write the proportion equation
418.23 : 627.44 = 129.67 : x - Step 2: Convert to fraction form
418.23/627.44 = 129.67/x - Step 3: Cross multiply
418.23x = 627.44 × 129.67 - Step 4: Simplify right side
418.23x = 81,357.93 - Step 5: Solve for x
x = 81,357.93/418.23 - Step 6: Final answer
x = 194.53
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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.