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Finding the Fourth Proportional to 1,453.50, 2,179.54 and 723.49

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Solution

The fourth proportional to 1,453.50, 2,179.54 and 723.49 is: 1,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.50 : 2,179.54 = 723.49 : x
  2. Step 2: Convert to fraction form
    1,453.50/2,179.54 = 723.49/x
  3. Step 3: Cross multiply
    1,453.50x = 2,179.54 × 723.49
  4. Step 4: Simplify right side
    1,453.50x = 1,576,875.39
  5. Step 5: Solve for x
    x = 1,576,875.39/1,453.50
  6. Step 6: Final answer
    x = 1,084.88

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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.