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Finding the Fourth Proportional to 1,690.59, 2,534.80 and 704.09

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Solution

The fourth proportional to 1,690.59, 2,534.80 and 704.09 is: 1,055.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.59 : 2,534.80 = 704.09 : x
  2. Step 2: Convert to fraction form
    1,690.59/2,534.80 = 704.09/x
  3. Step 3: Cross multiply
    1,690.59x = 2,534.80 × 704.09
  4. Step 4: Simplify right side
    1,690.59x = 1,784,727.33
  5. Step 5: Solve for x
    x = 1,784,727.33/1,690.59
  6. Step 6: Final answer
    x = 1,055.68

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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.