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Finding the Fourth Proportional to 1,708.75, 2,562.89 and 668.03

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Solution

The fourth proportional to 1,708.75, 2,562.89 and 668.03 is: 1,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.75 : 2,562.89 = 668.03 : x
  2. Step 2: Convert to fraction form
    1,708.75/2,562.89 = 668.03/x
  3. Step 3: Cross multiply
    1,708.75x = 2,562.89 × 668.03
  4. Step 4: Simplify right side
    1,708.75x = 1,712,087.41
  5. Step 5: Solve for x
    x = 1,712,087.41/1,708.75
  6. Step 6: Final answer
    x = 1,001.95

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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.