Home / 1,471.22-2,206.96-431.18

Finding the Fourth Proportional to 1,471.22, 2,206.96 and 431.18

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Solution

The fourth proportional to 1,471.22, 2,206.96 and 431.18 is: 646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.22 : 2,206.96 = 431.18 : x
  2. Step 2: Convert to fraction form
    1,471.22/2,206.96 = 431.18/x
  3. Step 3: Cross multiply
    1,471.22x = 2,206.96 × 431.18
  4. Step 4: Simplify right side
    1,471.22x = 951,601.45
  5. Step 5: Solve for x
    x = 951,601.45/1,471.22
  6. Step 6: Final answer
    x = 646.81

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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.