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Finding the Fourth Proportional to 1,551.25, 2,327.48 and 684.96

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Solution

The fourth proportional to 1,551.25, 2,327.48 and 684.96 is: 1,027.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.25 : 2,327.48 = 684.96 : x
  2. Step 2: Convert to fraction form
    1,551.25/2,327.48 = 684.96/x
  3. Step 3: Cross multiply
    1,551.25x = 2,327.48 × 684.96
  4. Step 4: Simplify right side
    1,551.25x = 1,594,230.70
  5. Step 5: Solve for x
    x = 1,594,230.70/1,551.25
  6. Step 6: Final answer
    x = 1,027.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.