Home / 1,230.21-1,845.26-499.76

Finding the Fourth Proportional to 1,230.21, 1,845.26 and 499.76

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Solution

The fourth proportional to 1,230.21, 1,845.26 and 499.76 is: 749.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.21 : 1,845.26 = 499.76 : x
  2. Step 2: Convert to fraction form
    1,230.21/1,845.26 = 499.76/x
  3. Step 3: Cross multiply
    1,230.21x = 1,845.26 × 499.76
  4. Step 4: Simplify right side
    1,230.21x = 922,187.14
  5. Step 5: Solve for x
    x = 922,187.14/1,230.21
  6. Step 6: Final answer
    x = 749.62

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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.