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Finding the Fourth Proportional to 499.19, 749.22 and 255.85

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Solution

The fourth proportional to 499.19, 749.22 and 255.85 is: 384.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.19 : 749.22 = 255.85 : x
  2. Step 2: Convert to fraction form
    499.19/749.22 = 255.85/x
  3. Step 3: Cross multiply
    499.19x = 749.22 × 255.85
  4. Step 4: Simplify right side
    499.19x = 191,687.94
  5. Step 5: Solve for x
    x = 191,687.94/499.19
  6. Step 6: Final answer
    x = 384.00

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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.