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Finding the Third Proportional to 486.63 and 755.58

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Solution

The third proportional to 486.63 and 755.58 is: 1,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.63 : 755.58 = 755.58 : x
  2. Step 2: Convert to fraction form
    486.63/755.58 = 755.58/x
  3. Step 3: Cross multiply
    486.63x = 755.58 × 755.58
  4. Step 4: Simplify right side
    486.63x = 570,898.30
  5. Step 5: Solve for x
    x = 570,898.30/486.63
  6. Step 6: Final answer
    x = 1,173.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.