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Finding the Fourth Proportional to 1,736.90, 2,605.08 and 641.01

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Solution

The fourth proportional to 1,736.90, 2,605.08 and 641.01 is: 961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.90 : 2,605.08 = 641.01 : x
  2. Step 2: Convert to fraction form
    1,736.90/2,605.08 = 641.01/x
  3. Step 3: Cross multiply
    1,736.90x = 2,605.08 × 641.01
  4. Step 4: Simplify right side
    1,736.90x = 1,669,882.33
  5. Step 5: Solve for x
    x = 1,669,882.33/1,736.90
  6. Step 6: Final answer
    x = 961.42

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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.