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Finding the Fourth Proportional to 1,458.45, 2,188.07 and 484.56

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Solution

The fourth proportional to 1,458.45, 2,188.07 and 484.56 is: 726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.45 : 2,188.07 = 484.56 : x
  2. Step 2: Convert to fraction form
    1,458.45/2,188.07 = 484.56/x
  3. Step 3: Cross multiply
    1,458.45x = 2,188.07 × 484.56
  4. Step 4: Simplify right side
    1,458.45x = 1,060,251.20
  5. Step 5: Solve for x
    x = 1,060,251.20/1,458.45
  6. Step 6: Final answer
    x = 726.97

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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.