Home / 1,161.28-1,741.88-339.56

Finding the Fourth Proportional to 1,161.28, 1,741.88 and 339.56

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Solution

The fourth proportional to 1,161.28, 1,741.88 and 339.56 is: 509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.28 : 1,741.88 = 339.56 : x
  2. Step 2: Convert to fraction form
    1,161.28/1,741.88 = 339.56/x
  3. Step 3: Cross multiply
    1,161.28x = 1,741.88 × 339.56
  4. Step 4: Simplify right side
    1,161.28x = 591,472.77
  5. Step 5: Solve for x
    x = 591,472.77/1,161.28
  6. Step 6: Final answer
    x = 509.33

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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.