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Finding the Fourth Proportional to 490.77, 736.15 and 125.56

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Solution

The fourth proportional to 490.77, 736.15 and 125.56 is: 188.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.77 : 736.15 = 125.56 : x
  2. Step 2: Convert to fraction form
    490.77/736.15 = 125.56/x
  3. Step 3: Cross multiply
    490.77x = 736.15 × 125.56
  4. Step 4: Simplify right side
    490.77x = 92,430.99
  5. Step 5: Solve for x
    x = 92,430.99/490.77
  6. Step 6: Final answer
    x = 188.34

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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.