Finding the Fourth Proportional to 750.80, 1,035.78 and 471.08
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Solution
The fourth proportional to 750.80, 1,035.78 and 471.08 is: 649.89
Step by Step Solution
- Step 1: Write the proportion equation
750.80 : 1,035.78 = 471.08 : x - Step 2: Convert to fraction form
750.80/1,035.78 = 471.08/x - Step 3: Cross multiply
750.80x = 1,035.78 × 471.08 - Step 4: Simplify right side
750.80x = 487,935.24 - Step 5: Solve for x
x = 487,935.24/750.80 - Step 6: Final answer
x = 649.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.