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Finding the Fourth Proportional to 450.15, 675.16 and 125.49

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Solution

The fourth proportional to 450.15, 675.16 and 125.49 is: 188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.15 : 675.16 = 125.49 : x
  2. Step 2: Convert to fraction form
    450.15/675.16 = 125.49/x
  3. Step 3: Cross multiply
    450.15x = 675.16 × 125.49
  4. Step 4: Simplify right side
    450.15x = 84,722.14
  5. Step 5: Solve for x
    x = 84,722.14/450.15
  6. Step 6: Final answer
    x = 188.21

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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.