Home / 1,447.51-2,171.25-351.88

Finding the Fourth Proportional to 1,447.51, 2,171.25 and 351.88

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Solution

The fourth proportional to 1,447.51, 2,171.25 and 351.88 is: 527.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.51 : 2,171.25 = 351.88 : x
  2. Step 2: Convert to fraction form
    1,447.51/2,171.25 = 351.88/x
  3. Step 3: Cross multiply
    1,447.51x = 2,171.25 × 351.88
  4. Step 4: Simplify right side
    1,447.51x = 764,019.45
  5. Step 5: Solve for x
    x = 764,019.45/1,447.51
  6. Step 6: Final answer
    x = 527.82

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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.