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Finding the Fourth Proportional to 1,268.02, 1,904.78 and 1,073.42

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Solution

The fourth proportional to 1,268.02, 1,904.78 and 1,073.42 is: 1,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.02 : 1,904.78 = 1,073.42 : x
  2. Step 2: Convert to fraction form
    1,268.02/1,904.78 = 1,073.42/x
  3. Step 3: Cross multiply
    1,268.02x = 1,904.78 × 1,073.42
  4. Step 4: Simplify right side
    1,268.02x = 2,044,629.25
  5. Step 5: Solve for x
    x = 2,044,629.25/1,268.02
  6. Step 6: Final answer
    x = 1,612.46

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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.