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Finding the Fourth Proportional to 1,706.58, 2,559.78 and 731.97

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Solution

The fourth proportional to 1,706.58, 2,559.78 and 731.97 is: 1,097.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,706.58 : 2,559.78 = 731.97 : x
  2. Step 2: Convert to fraction form
    1,706.58/2,559.78 = 731.97/x
  3. Step 3: Cross multiply
    1,706.58x = 2,559.78 × 731.97
  4. Step 4: Simplify right side
    1,706.58x = 1,873,682.17
  5. Step 5: Solve for x
    x = 1,873,682.17/1,706.58
  6. Step 6: Final answer
    x = 1,097.92

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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.