Finding the Fourth Proportional to 242.99, 335.30 and 138.08
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Solution
The fourth proportional to 242.99, 335.30 and 138.08 is: 190.53
Step by Step Solution
- Step 1: Write the proportion equation
242.99 : 335.30 = 138.08 : x - Step 2: Convert to fraction form
242.99/335.30 = 138.08/x - Step 3: Cross multiply
242.99x = 335.30 × 138.08 - Step 4: Simplify right side
242.99x = 46,296.99 - Step 5: Solve for x
x = 46,296.99/242.99 - Step 6: Final answer
x = 190.53
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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.