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Finding the Fourth Proportional to 1,458.43, 2,187.42 and 484.54

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Solution

The fourth proportional to 1,458.43, 2,187.42 and 484.54 is: 726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.43 : 2,187.42 = 484.54 : x
  2. Step 2: Convert to fraction form
    1,458.43/2,187.42 = 484.54/x
  3. Step 3: Cross multiply
    1,458.43x = 2,187.42 × 484.54
  4. Step 4: Simplify right side
    1,458.43x = 1,059,892.49
  5. Step 5: Solve for x
    x = 1,059,892.49/1,458.43
  6. Step 6: Final answer
    x = 726.74

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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.