Finding the Fourth Proportional to 750.74, 1,126.11 and 339.80
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Solution
The fourth proportional to 750.74, 1,126.11 and 339.80 is: 509.70
Step by Step Solution
- Step 1: Write the proportion equation
750.74 : 1,126.11 = 339.80 : x - Step 2: Convert to fraction form
750.74/1,126.11 = 339.80/x - Step 3: Cross multiply
750.74x = 1,126.11 × 339.80 - Step 4: Simplify right side
750.74x = 382,646.55 - Step 5: Solve for x
x = 382,646.55/750.74 - Step 6: Final answer
x = 509.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.