Home / 1,162.36-1,743.78-432.28

Finding the Fourth Proportional to 1,162.36, 1,743.78 and 432.28

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Solution

The fourth proportional to 1,162.36, 1,743.78 and 432.28 is: 648.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.36 : 1,743.78 = 432.28 : x
  2. Step 2: Convert to fraction form
    1,162.36/1,743.78 = 432.28/x
  3. Step 3: Cross multiply
    1,162.36x = 1,743.78 × 432.28
  4. Step 4: Simplify right side
    1,162.36x = 753,801.22
  5. Step 5: Solve for x
    x = 753,801.22/1,162.36
  6. Step 6: Final answer
    x = 648.51

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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.