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Finding the Fourth Proportional to 499.35, 748.68 and 190.83

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Solution

The fourth proportional to 499.35, 748.68 and 190.83 is: 286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.35 : 748.68 = 190.83 : x
  2. Step 2: Convert to fraction form
    499.35/748.68 = 190.83/x
  3. Step 3: Cross multiply
    499.35x = 748.68 × 190.83
  4. Step 4: Simplify right side
    499.35x = 142,870.60
  5. Step 5: Solve for x
    x = 142,870.60/499.35
  6. Step 6: Final answer
    x = 286.11

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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.