Finding the Fourth Proportional to 305.17, 457.55 and 207.12
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Solution
The fourth proportional to 305.17, 457.55 and 207.12 is: 310.55
Step by Step Solution
- Step 1: Write the proportion equation
305.17 : 457.55 = 207.12 : x - Step 2: Convert to fraction form
305.17/457.55 = 207.12/x - Step 3: Cross multiply
305.17x = 457.55 × 207.12 - Step 4: Simplify right side
305.17x = 94,769.21 - Step 5: Solve for x
x = 94,769.21/305.17 - Step 6: Final answer
x = 310.55
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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.