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Finding the Fourth Proportional to 450.56, 675.34 and 190.49

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Solution

The fourth proportional to 450.56, 675.34 and 190.49 is: 285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.56 : 675.34 = 190.49 : x
  2. Step 2: Convert to fraction form
    450.56/675.34 = 190.49/x
  3. Step 3: Cross multiply
    450.56x = 675.34 × 190.49
  4. Step 4: Simplify right side
    450.56x = 128,641.66
  5. Step 5: Solve for x
    x = 128,641.66/450.56
  6. Step 6: Final answer
    x = 285.51

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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.