Finding the Fourth Proportional to 1,187.71, 1,781.52 and 322
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Solution
The fourth proportional to 1,187.71, 1,781.52 and 322 is: 482.99
Step by Step Solution
- Step 1: Write the proportion equation
1,187.71 : 1,781.52 = 322 : x - Step 2: Convert to fraction form
1,187.71/1,781.52 = 322/x - Step 3: Cross multiply
1,187.71x = 1,781.52 × 322 - Step 4: Simplify right side
1,187.71x = 573,649.44 - Step 5: Solve for x
x = 573,649.44/1,187.71 - Step 6: Final answer
x = 482.99
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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.