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Finding the Fourth Proportional to 1,072.93, 1,609.68 and 303.43

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Solution

The fourth proportional to 1,072.93, 1,609.68 and 303.43 is: 455.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.93 : 1,609.68 = 303.43 : x
  2. Step 2: Convert to fraction form
    1,072.93/1,609.68 = 303.43/x
  3. Step 3: Cross multiply
    1,072.93x = 1,609.68 × 303.43
  4. Step 4: Simplify right side
    1,072.93x = 488,425.20
  5. Step 5: Solve for x
    x = 488,425.20/1,072.93
  6. Step 6: Final answer
    x = 455.23

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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.