Finding the Fourth Proportional to 155.36, 232.99 and 47.12
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Solution
The fourth proportional to 155.36, 232.99 and 47.12 is: 70.66
Step by Step Solution
- Step 1: Write the proportion equation
155.36 : 232.99 = 47.12 : x - Step 2: Convert to fraction form
155.36/232.99 = 47.12/x - Step 3: Cross multiply
155.36x = 232.99 × 47.12 - Step 4: Simplify right side
155.36x = 10,977.21 - Step 5: Solve for x
x = 10,977.21/155.36 - Step 6: Final answer
x = 70.66
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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.