Finding the Fourth Proportional to 157.08, 235.08 and 108.78
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Solution
The fourth proportional to 157.08, 235.08 and 108.78 is: 162.80
Step by Step Solution
- Step 1: Write the proportion equation
157.08 : 235.08 = 108.78 : x - Step 2: Convert to fraction form
157.08/235.08 = 108.78/x - Step 3: Cross multiply
157.08x = 235.08 × 108.78 - Step 4: Simplify right side
157.08x = 25,572.00 - Step 5: Solve for x
x = 25,572.00/157.08 - Step 6: Final answer
x = 162.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.