Finding the Fourth Proportional to 178.08, 245.79 and 112.65
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Solution
The fourth proportional to 178.08, 245.79 and 112.65 is: 155.48
Step by Step Solution
- Step 1: Write the proportion equation
178.08 : 245.79 = 112.65 : x - Step 2: Convert to fraction form
178.08/245.79 = 112.65/x - Step 3: Cross multiply
178.08x = 245.79 × 112.65 - Step 4: Simplify right side
178.08x = 27,688.24 - Step 5: Solve for x
x = 27,688.24/178.08 - Step 6: Final answer
x = 155.48
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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.