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Finding the Fourth Proportional to 1,446.74, 2,169.97 and 716.79

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Solution

The fourth proportional to 1,446.74, 2,169.97 and 716.79 is: 1,075.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.74 : 2,169.97 = 716.79 : x
  2. Step 2: Convert to fraction form
    1,446.74/2,169.97 = 716.79/x
  3. Step 3: Cross multiply
    1,446.74x = 2,169.97 × 716.79
  4. Step 4: Simplify right side
    1,446.74x = 1,555,411.00
  5. Step 5: Solve for x
    x = 1,555,411.00/1,446.74
  6. Step 6: Final answer
    x = 1,075.12

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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.