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Finding the Fourth Proportional to 1,217.43, 1,825.97 and 437.30

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Solution

The fourth proportional to 1,217.43, 1,825.97 and 437.30 is: 655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.43 : 1,825.97 = 437.30 : x
  2. Step 2: Convert to fraction form
    1,217.43/1,825.97 = 437.30/x
  3. Step 3: Cross multiply
    1,217.43x = 1,825.97 × 437.30
  4. Step 4: Simplify right side
    1,217.43x = 798,485.36
  5. Step 5: Solve for x
    x = 798,485.36/1,217.43
  6. Step 6: Final answer
    x = 655.88

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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.