Finding the Fourth Proportional to 159.49, 220.08 and 93.99
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Solution
The fourth proportional to 159.49, 220.08 and 93.99 is: 129.70
Step by Step Solution
- Step 1: Write the proportion equation
159.49 : 220.08 = 93.99 : x - Step 2: Convert to fraction form
159.49/220.08 = 93.99/x - Step 3: Cross multiply
159.49x = 220.08 × 93.99 - Step 4: Simplify right side
159.49x = 20,685.32 - Step 5: Solve for x
x = 20,685.32/159.49 - Step 6: Final answer
x = 129.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.