Finding the Fourth Proportional to 317.24, 476.10 and 129.66
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Solution
The fourth proportional to 317.24, 476.10 and 129.66 is: 194.59
Step by Step Solution
- Step 1: Write the proportion equation
317.24 : 476.10 = 129.66 : x - Step 2: Convert to fraction form
317.24/476.10 = 129.66/x - Step 3: Cross multiply
317.24x = 476.10 × 129.66 - Step 4: Simplify right side
317.24x = 61,731.13 - Step 5: Solve for x
x = 61,731.13/317.24 - Step 6: Final answer
x = 194.59
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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.