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Finding the Fourth Proportional to 450.44, 675.64 and 125.80

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Solution

The fourth proportional to 450.44, 675.64 and 125.80 is: 188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.44 : 675.64 = 125.80 : x
  2. Step 2: Convert to fraction form
    450.44/675.64 = 125.80/x
  3. Step 3: Cross multiply
    450.44x = 675.64 × 125.80
  4. Step 4: Simplify right side
    450.44x = 84,993.51
  5. Step 5: Solve for x
    x = 84,993.51/450.44
  6. Step 6: Final answer
    x = 188.69

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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.