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Finding the Fourth Proportional to 1,447.20, 2,169.99 and 473.22

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Solution

The fourth proportional to 1,447.20, 2,169.99 and 473.22 is: 709.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.20 : 2,169.99 = 473.22 : x
  2. Step 2: Convert to fraction form
    1,447.20/2,169.99 = 473.22/x
  3. Step 3: Cross multiply
    1,447.20x = 2,169.99 × 473.22
  4. Step 4: Simplify right side
    1,447.20x = 1,026,882.67
  5. Step 5: Solve for x
    x = 1,026,882.67/1,447.20
  6. Step 6: Final answer
    x = 709.57

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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.