Home / 1,440.48-2,160.66-453.27

Finding the Fourth Proportional to 1,440.48, 2,160.66 and 453.27

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Solution

The fourth proportional to 1,440.48, 2,160.66 and 453.27 is: 679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.48 : 2,160.66 = 453.27 : x
  2. Step 2: Convert to fraction form
    1,440.48/2,160.66 = 453.27/x
  3. Step 3: Cross multiply
    1,440.48x = 2,160.66 × 453.27
  4. Step 4: Simplify right side
    1,440.48x = 979,362.36
  5. Step 5: Solve for x
    x = 979,362.36/1,440.48
  6. Step 6: Final answer
    x = 679.89

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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.