Finding the Fourth Proportional to 163.78, 247.06 and 157.40
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Solution
The fourth proportional to 163.78, 247.06 and 157.40 is: 237.44
Step by Step Solution
- Step 1: Write the proportion equation
163.78 : 247.06 = 157.40 : x - Step 2: Convert to fraction form
163.78/247.06 = 157.40/x - Step 3: Cross multiply
163.78x = 247.06 × 157.40 - Step 4: Simplify right side
163.78x = 38,887.24 - Step 5: Solve for x
x = 38,887.24/163.78 - Step 6: Final answer
x = 237.44
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.