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Finding the Fourth Proportional to 1,454.88, 2,008 and 865.76

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Solution

The fourth proportional to 1,454.88, 2,008 and 865.76 is: 1,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.88 : 2,008 = 865.76 : x
  2. Step 2: Convert to fraction form
    1,454.88/2,008 = 865.76/x
  3. Step 3: Cross multiply
    1,454.88x = 2,008 × 865.76
  4. Step 4: Simplify right side
    1,454.88x = 1,738,446.08
  5. Step 5: Solve for x
    x = 1,738,446.08/1,454.88
  6. Step 6: Final answer
    x = 1,194.91

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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.