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Finding the Third Proportional to 284.34 and 449.72

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Solution

The third proportional to 284.34 and 449.72 is: 711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.34 : 449.72 = 449.72 : x
  2. Step 2: Convert to fraction form
    284.34/449.72 = 449.72/x
  3. Step 3: Cross multiply
    284.34x = 449.72 × 449.72
  4. Step 4: Simplify right side
    284.34x = 202,246.95
  5. Step 5: Solve for x
    x = 202,246.95/284.34
  6. Step 6: Final answer
    x = 711.28

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.