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Finding the Fourth Proportional to 1,458.46, 2,188.05 and 484.57

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Solution

The fourth proportional to 1,458.46, 2,188.05 and 484.57 is: 726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.46 : 2,188.05 = 484.57 : x
  2. Step 2: Convert to fraction form
    1,458.46/2,188.05 = 484.57/x
  3. Step 3: Cross multiply
    1,458.46x = 2,188.05 × 484.57
  4. Step 4: Simplify right side
    1,458.46x = 1,060,263.39
  5. Step 5: Solve for x
    x = 1,060,263.39/1,458.46
  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.