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Finding the Third Proportional to 314.63 and 478.88

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Solution

The third proportional to 314.63 and 478.88 is: 728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.63 : 478.88 = 478.88 : x
  2. Step 2: Convert to fraction form
    314.63/478.88 = 478.88/x
  3. Step 3: Cross multiply
    314.63x = 478.88 × 478.88
  4. Step 4: Simplify right side
    314.63x = 229,321.27
  5. Step 5: Solve for x
    x = 229,321.27/314.63
  6. Step 6: Final answer
    x = 728.87

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.