Finding the Fourth Proportional to 258.93, 387.99 and 149.19
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Solution
The fourth proportional to 258.93, 387.99 and 149.19 is: 223.55
Step by Step Solution
- Step 1: Write the proportion equation
258.93 : 387.99 = 149.19 : x - Step 2: Convert to fraction form
258.93/387.99 = 149.19/x - Step 3: Cross multiply
258.93x = 387.99 × 149.19 - Step 4: Simplify right side
258.93x = 57,884.23 - Step 5: Solve for x
x = 57,884.23/258.93 - Step 6: Final answer
x = 223.55
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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.