Finding the Fourth Proportional to 155.19, 214.16 and 92.99
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Solution
The fourth proportional to 155.19, 214.16 and 92.99 is: 128.32
Step by Step Solution
- Step 1: Write the proportion equation
155.19 : 214.16 = 92.99 : x - Step 2: Convert to fraction form
155.19/214.16 = 92.99/x - Step 3: Cross multiply
155.19x = 214.16 × 92.99 - Step 4: Simplify right side
155.19x = 19,914.13 - Step 5: Solve for x
x = 19,914.13/155.19 - Step 6: Final answer
x = 128.32
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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.