Finding the Fourth Proportional to 338.65, 507.84 and 133.19
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Solution
The fourth proportional to 338.65, 507.84 and 133.19 is: 199.73
Step by Step Solution
- Step 1: Write the proportion equation
338.65 : 507.84 = 133.19 : x - Step 2: Convert to fraction form
338.65/507.84 = 133.19/x - Step 3: Cross multiply
338.65x = 507.84 × 133.19 - Step 4: Simplify right side
338.65x = 67,639.21 - Step 5: Solve for x
x = 67,639.21/338.65 - Step 6: Final answer
x = 199.73
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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.