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Finding the Fourth Proportional to 1,801.05, 2,700.92 and 630.73

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Solution

The fourth proportional to 1,801.05, 2,700.92 and 630.73 is: 945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.05 : 2,700.92 = 630.73 : x
  2. Step 2: Convert to fraction form
    1,801.05/2,700.92 = 630.73/x
  3. Step 3: Cross multiply
    1,801.05x = 2,700.92 × 630.73
  4. Step 4: Simplify right side
    1,801.05x = 1,703,551.27
  5. Step 5: Solve for x
    x = 1,703,551.27/1,801.05
  6. Step 6: Final answer
    x = 945.87

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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.