Home / 1,447.25-2,171.34-522.80

Finding the Fourth Proportional to 1,447.25, 2,171.34 and 522.80

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Solution

The fourth proportional to 1,447.25, 2,171.34 and 522.80 is: 784.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.25 : 2,171.34 = 522.80 : x
  2. Step 2: Convert to fraction form
    1,447.25/2,171.34 = 522.80/x
  3. Step 3: Cross multiply
    1,447.25x = 2,171.34 × 522.80
  4. Step 4: Simplify right side
    1,447.25x = 1,135,176.55
  5. Step 5: Solve for x
    x = 1,135,176.55/1,447.25
  6. Step 6: Final answer
    x = 784.37

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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.