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Finding the Fourth Proportional to 1,268.56, 1,903.14 and 446.91

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Solution

The fourth proportional to 1,268.56, 1,903.14 and 446.91 is: 670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.56 : 1,903.14 = 446.91 : x
  2. Step 2: Convert to fraction form
    1,268.56/1,903.14 = 446.91/x
  3. Step 3: Cross multiply
    1,268.56x = 1,903.14 × 446.91
  4. Step 4: Simplify right side
    1,268.56x = 850,530.06
  5. Step 5: Solve for x
    x = 850,530.06/1,268.56
  6. Step 6: Final answer
    x = 670.47

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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.