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Finding the Fourth Proportional to 1,033.83, 1,551.20 and 485.97

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Solution

The fourth proportional to 1,033.83, 1,551.20 and 485.97 is: 729.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.83 : 1,551.20 = 485.97 : x
  2. Step 2: Convert to fraction form
    1,033.83/1,551.20 = 485.97/x
  3. Step 3: Cross multiply
    1,033.83x = 1,551.20 × 485.97
  4. Step 4: Simplify right side
    1,033.83x = 753,836.66
  5. Step 5: Solve for x
    x = 753,836.66/1,033.83
  6. Step 6: Final answer
    x = 729.17

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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.