Finding the Fourth Proportional to 338.60, 507.70 and 122.08
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Solution
The fourth proportional to 338.60, 507.70 and 122.08 is: 183.05
Step by Step Solution
- Step 1: Write the proportion equation
338.60 : 507.70 = 122.08 : x - Step 2: Convert to fraction form
338.60/507.70 = 122.08/x - Step 3: Cross multiply
338.60x = 507.70 × 122.08 - Step 4: Simplify right side
338.60x = 61,980.02 - Step 5: Solve for x
x = 61,980.02/338.60 - Step 6: Final answer
x = 183.05
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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.