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Finding the Fourth Proportional to 1,352.79, 2,027.97 and 621.77

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Solution

The fourth proportional to 1,352.79, 2,027.97 and 621.77 is: 932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.79 : 2,027.97 = 621.77 : x
  2. Step 2: Convert to fraction form
    1,352.79/2,027.97 = 621.77/x
  3. Step 3: Cross multiply
    1,352.79x = 2,027.97 × 621.77
  4. Step 4: Simplify right side
    1,352.79x = 1,260,920.77
  5. Step 5: Solve for x
    x = 1,260,920.77/1,352.79
  6. Step 6: Final answer
    x = 932.09

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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.