Finding the Fourth Proportional to 305.23, 457.70 and 88.75
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Solution
The fourth proportional to 305.23, 457.70 and 88.75 is: 133.08
Step by Step Solution
- Step 1: Write the proportion equation
305.23 : 457.70 = 88.75 : x - Step 2: Convert to fraction form
305.23/457.70 = 88.75/x - Step 3: Cross multiply
305.23x = 457.70 × 88.75 - Step 4: Simplify right side
305.23x = 40,620.88 - Step 5: Solve for x
x = 40,620.88/305.23 - Step 6: Final answer
x = 133.08
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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.