Finding the Fourth Proportional to 347.76, 520.74 and 313.74
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Solution
The fourth proportional to 347.76, 520.74 and 313.74 is: 469.80
Step by Step Solution
- Step 1: Write the proportion equation
347.76 : 520.74 = 313.74 : x - Step 2: Convert to fraction form
347.76/520.74 = 313.74/x - Step 3: Cross multiply
347.76x = 520.74 × 313.74 - Step 4: Simplify right side
347.76x = 163,376.97 - Step 5: Solve for x
x = 163,376.97/347.76 - Step 6: Final answer
x = 469.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.