Finding the Fourth Proportional to 431.70, 595.79 and 245.19
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Solution
The fourth proportional to 431.70, 595.79 and 245.19 is: 338.39
Step by Step Solution
- Step 1: Write the proportion equation
431.70 : 595.79 = 245.19 : x - Step 2: Convert to fraction form
431.70/595.79 = 245.19/x - Step 3: Cross multiply
431.70x = 595.79 × 245.19 - Step 4: Simplify right side
431.70x = 146,083.68 - Step 5: Solve for x
x = 146,083.68/431.70 - Step 6: Final answer
x = 338.39
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1.5x scale
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.