Home / 1,161.59-1,741.98-431.15

Finding the Fourth Proportional to 1,161.59, 1,741.98 and 431.15

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Solution

The fourth proportional to 1,161.59, 1,741.98 and 431.15 is: 646.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.59 : 1,741.98 = 431.15 : x
  2. Step 2: Convert to fraction form
    1,161.59/1,741.98 = 431.15/x
  3. Step 3: Cross multiply
    1,161.59x = 1,741.98 × 431.15
  4. Step 4: Simplify right side
    1,161.59x = 751,054.68
  5. Step 5: Solve for x
    x = 751,054.68/1,161.59
  6. Step 6: Final answer
    x = 646.57

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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.