Finding the Fourth Proportional to 187.70, 259.08 and 113.99
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Solution
The fourth proportional to 187.70, 259.08 and 113.99 is: 157.34
Step by Step Solution
- Step 1: Write the proportion equation
187.70 : 259.08 = 113.99 : x - Step 2: Convert to fraction form
187.70/259.08 = 113.99/x - Step 3: Cross multiply
187.70x = 259.08 × 113.99 - Step 4: Simplify right side
187.70x = 29,532.53 - Step 5: Solve for x
x = 29,532.53/187.70 - Step 6: Final answer
x = 157.34
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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.