Finding the Fourth Proportional to 1,319.68, 1,979.12 and 550
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Solution
The fourth proportional to 1,319.68, 1,979.12 and 550 is: 824.83
Step by Step Solution
- Step 1: Write the proportion equation
1,319.68 : 1,979.12 = 550 : x - Step 2: Convert to fraction form
1,319.68/1,979.12 = 550/x - Step 3: Cross multiply
1,319.68x = 1,979.12 × 550 - Step 4: Simplify right side
1,319.68x = 1,088,516 - Step 5: Solve for x
x = 1,088,516/1,319.68 - Step 6: Final answer
x = 824.83
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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.