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Finding the Fourth Proportional to 1,454.91, 2,007.97 and 865.77

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Solution

The fourth proportional to 1,454.91, 2,007.97 and 865.77 is: 1,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.91 : 2,007.97 = 865.77 : x
  2. Step 2: Convert to fraction form
    1,454.91/2,007.97 = 865.77/x
  3. Step 3: Cross multiply
    1,454.91x = 2,007.97 × 865.77
  4. Step 4: Simplify right side
    1,454.91x = 1,738,438.02
  5. Step 5: Solve for x
    x = 1,738,438.02/1,454.91
  6. Step 6: Final answer
    x = 1,194.88

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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.