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Finding the Fourth Proportional to 1,026.22, 1,416.39 and 908.97

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Solution

The fourth proportional to 1,026.22, 1,416.39 and 908.97 is: 1,254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.22 : 1,416.39 = 908.97 : x
  2. Step 2: Convert to fraction form
    1,026.22/1,416.39 = 908.97/x
  3. Step 3: Cross multiply
    1,026.22x = 1,416.39 × 908.97
  4. Step 4: Simplify right side
    1,026.22x = 1,287,455.27
  5. Step 5: Solve for x
    x = 1,287,455.27/1,026.22
  6. Step 6: Final answer
    x = 1,254.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.