Finding the Fourth Proportional to 318.15, 476.88 and 135.63
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Solution
The fourth proportional to 318.15, 476.88 and 135.63 is: 203.30
Step by Step Solution
- Step 1: Write the proportion equation
318.15 : 476.88 = 135.63 : x - Step 2: Convert to fraction form
318.15/476.88 = 135.63/x - Step 3: Cross multiply
318.15x = 476.88 × 135.63 - Step 4: Simplify right side
318.15x = 64,679.23 - Step 5: Solve for x
x = 64,679.23/318.15 - Step 6: Final answer
x = 203.30
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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.