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Finding the Fourth Proportional to 449.09, 673.51 and 124.38

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Solution

The fourth proportional to 449.09, 673.51 and 124.38 is: 186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.09 : 673.51 = 124.38 : x
  2. Step 2: Convert to fraction form
    449.09/673.51 = 124.38/x
  3. Step 3: Cross multiply
    449.09x = 673.51 × 124.38
  4. Step 4: Simplify right side
    449.09x = 83,771.17
  5. Step 5: Solve for x
    x = 83,771.17/449.09
  6. Step 6: Final answer
    x = 186.54

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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.