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Finding the Fourth Proportional to 125.50, 188.12 and 44.28

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Solution

The fourth proportional to 125.50, 188.12 and 44.28 is: 66.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.50 : 188.12 = 44.28 : x
  2. Step 2: Convert to fraction form
    125.50/188.12 = 44.28/x
  3. Step 3: Cross multiply
    125.50x = 188.12 × 44.28
  4. Step 4: Simplify right side
    125.50x = 8,329.95
  5. Step 5: Solve for x
    x = 8,329.95/125.50
  6. Step 6: Final answer
    x = 66.37

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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.