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Finding the Fourth Proportional to 2,165.61, 3,248.88 and 704.73

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Solution

The fourth proportional to 2,165.61, 3,248.88 and 704.73 is: 1,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.61 : 3,248.88 = 704.73 : x
  2. Step 2: Convert to fraction form
    2,165.61/3,248.88 = 704.73/x
  3. Step 3: Cross multiply
    2,165.61x = 3,248.88 × 704.73
  4. Step 4: Simplify right side
    2,165.61x = 2,289,583.20
  5. Step 5: Solve for x
    x = 2,289,583.20/2,165.61
  6. Step 6: Final answer
    x = 1,057.25

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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.