Finding the Fourth Proportional to 258.08, 386.99 and 93.49
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Solution
The fourth proportional to 258.08, 386.99 and 93.49 is: 140.19
Step by Step Solution
- Step 1: Write the proportion equation
258.08 : 386.99 = 93.49 : x - Step 2: Convert to fraction form
258.08/386.99 = 93.49/x - Step 3: Cross multiply
258.08x = 386.99 × 93.49 - Step 4: Simplify right side
258.08x = 36,179.70 - Step 5: Solve for x
x = 36,179.70/258.08 - Step 6: Final answer
x = 140.19
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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.