Finding the Fourth Proportional to 669.80, 924.36 and 375.09
Calculator
Solution
The fourth proportional to 669.80, 924.36 and 375.09 is: 517.64
Step by Step Solution
- Step 1: Write the proportion equation
669.80 : 924.36 = 375.09 : x - Step 2: Convert to fraction form
669.80/924.36 = 375.09/x - Step 3: Cross multiply
669.80x = 924.36 × 375.09 - Step 4: Simplify right side
669.80x = 346,718.19 - Step 5: Solve for x
x = 346,718.19/669.80 - Step 6: Final answer
x = 517.64
Related Problems
Find fourth proportional to 334.90, 462.18 and 187.55
Half scale
Find fourth proportional to 1,339.60, 1,848.72 and 750.18
Double scale
Find fourth proportional to 670.80, 925.74 and 376.09
Similar ratio
Find fourth proportional to 1,004.70, 1,386.54 and 562.64
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.