Finding the Fourth Proportional to 313.26, 432.30 and 188.99
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Solution
The fourth proportional to 313.26, 432.30 and 188.99 is: 260.80
Step by Step Solution
- Step 1: Write the proportion equation
313.26 : 432.30 = 188.99 : x - Step 2: Convert to fraction form
313.26/432.30 = 188.99/x - Step 3: Cross multiply
313.26x = 432.30 × 188.99 - Step 4: Simplify right side
313.26x = 81,698.22 - Step 5: Solve for x
x = 81,698.22/313.26 - Step 6: Final answer
x = 260.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.