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Finding the Fourth Proportional to 1,753.30, 2,628.09 and 930.73

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Solution

The fourth proportional to 1,753.30, 2,628.09 and 930.73 is: 1,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.30 : 2,628.09 = 930.73 : x
  2. Step 2: Convert to fraction form
    1,753.30/2,628.09 = 930.73/x
  3. Step 3: Cross multiply
    1,753.30x = 2,628.09 × 930.73
  4. Step 4: Simplify right side
    1,753.30x = 2,446,042.21
  5. Step 5: Solve for x
    x = 2,446,042.21/1,753.30
  6. Step 6: Final answer
    x = 1,395.11

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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.