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Finding the Fourth Proportional to 2,240.97, 3,358.68 and 778.41

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Solution

The fourth proportional to 2,240.97, 3,358.68 and 778.41 is: 1,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.97 : 3,358.68 = 778.41 : x
  2. Step 2: Convert to fraction form
    2,240.97/3,358.68 = 778.41/x
  3. Step 3: Cross multiply
    2,240.97x = 3,358.68 × 778.41
  4. Step 4: Simplify right side
    2,240.97x = 2,614,430.10
  5. Step 5: Solve for x
    x = 2,614,430.10/2,240.97
  6. Step 6: Final answer
    x = 1,166.65

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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.