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Finding the Fourth Proportional to 1,454.88, 2,007.44 and 865.36

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Solution

The fourth proportional to 1,454.88, 2,007.44 and 865.36 is: 1,194.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.88 : 2,007.44 = 865.36 : x
  2. Step 2: Convert to fraction form
    1,454.88/2,007.44 = 865.36/x
  3. Step 3: Cross multiply
    1,454.88x = 2,007.44 × 865.36
  4. Step 4: Simplify right side
    1,454.88x = 1,737,158.28
  5. Step 5: Solve for x
    x = 1,737,158.28/1,454.88
  6. Step 6: Final answer
    x = 1,194.02

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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.