Home / 1,432.82-2,149.56-445.58

Finding the Fourth Proportional to 1,432.82, 2,149.56 and 445.58

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Solution

The fourth proportional to 1,432.82, 2,149.56 and 445.58 is: 668.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.82 : 2,149.56 = 445.58 : x
  2. Step 2: Convert to fraction form
    1,432.82/2,149.56 = 445.58/x
  3. Step 3: Cross multiply
    1,432.82x = 2,149.56 × 445.58
  4. Step 4: Simplify right side
    1,432.82x = 957,798.26
  5. Step 5: Solve for x
    x = 957,798.26/1,432.82
  6. Step 6: Final answer
    x = 668.47

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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.