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Finding the Fourth Proportional to 1,047.80, 1,446.09 and 605.71

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Solution

The fourth proportional to 1,047.80, 1,446.09 and 605.71 is: 835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.80 : 1,446.09 = 605.71 : x
  2. Step 2: Convert to fraction form
    1,047.80/1,446.09 = 605.71/x
  3. Step 3: Cross multiply
    1,047.80x = 1,446.09 × 605.71
  4. Step 4: Simplify right side
    1,047.80x = 875,910.71
  5. Step 5: Solve for x
    x = 875,910.71/1,047.80
  6. Step 6: Final answer
    x = 835.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.