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Finding the Third Proportional to 395.50 and 602.50

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Solution

The third proportional to 395.50 and 602.50 is: 917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.50 : 602.50 = 602.50 : x
  2. Step 2: Convert to fraction form
    395.50/602.50 = 602.50/x
  3. Step 3: Cross multiply
    395.50x = 602.50 × 602.50
  4. Step 4: Simplify right side
    395.50x = 363,006.25
  5. Step 5: Solve for x
    x = 363,006.25/395.50
  6. Step 6: Final answer
    x = 917.84

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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.