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Finding the Fourth Proportional to 449.47, 673.65 and 189.37

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Solution

The fourth proportional to 449.47, 673.65 and 189.37 is: 283.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.47 : 673.65 = 189.37 : x
  2. Step 2: Convert to fraction form
    449.47/673.65 = 189.37/x
  3. Step 3: Cross multiply
    449.47x = 673.65 × 189.37
  4. Step 4: Simplify right side
    449.47x = 127,569.10
  5. Step 5: Solve for x
    x = 127,569.10/449.47
  6. Step 6: Final answer
    x = 283.82

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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.