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Finding the Fourth Proportional to 1,682.84, 2,525.68 and 709.64

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Solution

The fourth proportional to 1,682.84, 2,525.68 and 709.64 is: 1,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.84 : 2,525.68 = 709.64 : x
  2. Step 2: Convert to fraction form
    1,682.84/2,525.68 = 709.64/x
  3. Step 3: Cross multiply
    1,682.84x = 2,525.68 × 709.64
  4. Step 4: Simplify right side
    1,682.84x = 1,792,323.56
  5. Step 5: Solve for x
    x = 1,792,323.56/1,682.84
  6. Step 6: Final answer
    x = 1,065.06

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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.