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Finding the Fourth Proportional to 1,453.99, 2,180.78 and 479.97

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Solution

The fourth proportional to 1,453.99, 2,180.78 and 479.97 is: 719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.99 : 2,180.78 = 479.97 : x
  2. Step 2: Convert to fraction form
    1,453.99/2,180.78 = 479.97/x
  3. Step 3: Cross multiply
    1,453.99x = 2,180.78 × 479.97
  4. Step 4: Simplify right side
    1,453.99x = 1,046,708.98
  5. Step 5: Solve for x
    x = 1,046,708.98/1,453.99
  6. Step 6: Final answer
    x = 719.89

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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.