Finding the Fourth Proportional to 1,207.68, 1,811.85 and 342
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Solution
The fourth proportional to 1,207.68, 1,811.85 and 342 is: 513.09
Step by Step Solution
- Step 1: Write the proportion equation
1,207.68 : 1,811.85 = 342 : x - Step 2: Convert to fraction form
1,207.68/1,811.85 = 342/x - Step 3: Cross multiply
1,207.68x = 1,811.85 × 342 - Step 4: Simplify right side
1,207.68x = 619,652.70 - Step 5: Solve for x
x = 619,652.70/1,207.68 - Step 6: Final answer
x = 513.09
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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.