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Finding the Fourth Proportional to 1,495.13, 2,062.73 and 905.45

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Solution

The fourth proportional to 1,495.13, 2,062.73 and 905.45 is: 1,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.13 : 2,062.73 = 905.45 : x
  2. Step 2: Convert to fraction form
    1,495.13/2,062.73 = 905.45/x
  3. Step 3: Cross multiply
    1,495.13x = 2,062.73 × 905.45
  4. Step 4: Simplify right side
    1,495.13x = 1,867,698.88
  5. Step 5: Solve for x
    x = 1,867,698.88/1,495.13
  6. Step 6: Final answer
    x = 1,249.19

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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.