Home / 1,161.09-1,741.74-339.36

Finding the Fourth Proportional to 1,161.09, 1,741.74 and 339.36

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Solution

The fourth proportional to 1,161.09, 1,741.74 and 339.36 is: 509.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.09 : 1,741.74 = 339.36 : x
  2. Step 2: Convert to fraction form
    1,161.09/1,741.74 = 339.36/x
  3. Step 3: Cross multiply
    1,161.09x = 1,741.74 × 339.36
  4. Step 4: Simplify right side
    1,161.09x = 591,076.89
  5. Step 5: Solve for x
    x = 591,076.89/1,161.09
  6. Step 6: Final answer
    x = 509.07

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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.