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Finding the Third Proportional to 360 and 486.50

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Solution

The third proportional to 360 and 486.50 is: 657.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    360 : 486.50 = 486.50 : x
  2. Step 2: Convert to fraction form
    360/486.50 = 486.50/x
  3. Step 3: Cross multiply
    360x = 486.50 × 486.50
  4. Step 4: Simplify right side
    360x = 236,682.25
  5. Step 5: Solve for x
    x = 236,682.25/360
  6. Step 6: Final answer
    x = 657.45

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.