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Finding the Fourth Proportional to 2,215.52, 3,323.80 and 676.52

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Solution

The fourth proportional to 2,215.52, 3,323.80 and 676.52 is: 1,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.52 : 3,323.80 = 676.52 : x
  2. Step 2: Convert to fraction form
    2,215.52/3,323.80 = 676.52/x
  3. Step 3: Cross multiply
    2,215.52x = 3,323.80 × 676.52
  4. Step 4: Simplify right side
    2,215.52x = 2,248,617.18
  5. Step 5: Solve for x
    x = 2,248,617.18/2,215.52
  6. Step 6: Final answer
    x = 1,014.94

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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.