Finding the Fourth Proportional to 313.10, 431.93 and 202.67
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Solution
The fourth proportional to 313.10, 431.93 and 202.67 is: 279.59
Step by Step Solution
- Step 1: Write the proportion equation
313.10 : 431.93 = 202.67 : x - Step 2: Convert to fraction form
313.10/431.93 = 202.67/x - Step 3: Cross multiply
313.10x = 431.93 × 202.67 - Step 4: Simplify right side
313.10x = 87,538.24 - Step 5: Solve for x
x = 87,538.24/313.10 - Step 6: Final answer
x = 279.59
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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.