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Finding the Fourth Proportional to 1,495.16, 2,062.92 and 905.56

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Solution

The fourth proportional to 1,495.16, 2,062.92 and 905.56 is: 1,249.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.16 : 2,062.92 = 905.56 : x
  2. Step 2: Convert to fraction form
    1,495.16/2,062.92 = 905.56/x
  3. Step 3: Cross multiply
    1,495.16x = 2,062.92 × 905.56
  4. Step 4: Simplify right side
    1,495.16x = 1,868,097.84
  5. Step 5: Solve for x
    x = 1,868,097.84/1,495.16
  6. Step 6: Final answer
    x = 1,249.43

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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.