Home / 1,161.23-1,742.13-339.51

Finding the Fourth Proportional to 1,161.23, 1,742.13 and 339.51

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Solution

The fourth proportional to 1,161.23, 1,742.13 and 339.51 is: 509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.23 : 1,742.13 = 339.51 : x
  2. Step 2: Convert to fraction form
    1,161.23/1,742.13 = 339.51/x
  3. Step 3: Cross multiply
    1,161.23x = 1,742.13 × 339.51
  4. Step 4: Simplify right side
    1,161.23x = 591,470.56
  5. Step 5: Solve for x
    x = 591,470.56/1,161.23
  6. Step 6: Final answer
    x = 509.35

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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.