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Finding the Fourth Proportional to 1,699.65, 2,549.39 and 450.21

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Solution

The fourth proportional to 1,699.65, 2,549.39 and 450.21 is: 675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.65 : 2,549.39 = 450.21 : x
  2. Step 2: Convert to fraction form
    1,699.65/2,549.39 = 450.21/x
  3. Step 3: Cross multiply
    1,699.65x = 2,549.39 × 450.21
  4. Step 4: Simplify right side
    1,699.65x = 1,147,758.62
  5. Step 5: Solve for x
    x = 1,147,758.62/1,699.65
  6. Step 6: Final answer
    x = 675.29

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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.