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Finding the Fourth Proportional to 824.66, 1,236.51 and 727.37

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Solution

The fourth proportional to 824.66, 1,236.51 and 727.37 is: 1,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.66 : 1,236.51 = 727.37 : x
  2. Step 2: Convert to fraction form
    824.66/1,236.51 = 727.37/x
  3. Step 3: Cross multiply
    824.66x = 1,236.51 × 727.37
  4. Step 4: Simplify right side
    824.66x = 899,394.10
  5. Step 5: Solve for x
    x = 899,394.10/824.66
  6. Step 6: Final answer
    x = 1,090.63

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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.