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Finding the Fourth Proportional to 892.00, 1,230.76 and 499.00

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Solution

The fourth proportional to 892.00, 1,230.76 and 499.00 is: 688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.00 : 1,230.76 = 499.00 : x
  2. Step 2: Convert to fraction form
    892.00/1,230.76 = 499.00/x
  3. Step 3: Cross multiply
    892.00x = 1,230.76 × 499.00
  4. Step 4: Simplify right side
    892.00x = 614,149.09
  5. Step 5: Solve for x
    x = 614,149.09/892.00
  6. Step 6: Final answer
    x = 688.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.