Finding the Fourth Proportional to 156.23, 234.50 and 79.28
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Solution
The fourth proportional to 156.23, 234.50 and 79.28 is: 118.99
Step by Step Solution
- Step 1: Write the proportion equation
156.23 : 234.50 = 79.28 : x - Step 2: Convert to fraction form
156.23/234.50 = 79.28/x - Step 3: Cross multiply
156.23x = 234.50 × 79.28 - Step 4: Simplify right side
156.23x = 18,589.59 - Step 5: Solve for x
x = 18,589.59/156.23 - Step 6: Final answer
x = 118.99
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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.