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Finding the Third Proportional to 332.50 and 428.50

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Solution

The third proportional to 332.50 and 428.50 is: 552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.50 : 428.50 = 428.50 : x
  2. Step 2: Convert to fraction form
    332.50/428.50 = 428.50/x
  3. Step 3: Cross multiply
    332.50x = 428.50 × 428.50
  4. Step 4: Simplify right side
    332.50x = 183,612.25
  5. Step 5: Solve for x
    x = 183,612.25/332.50
  6. Step 6: Final answer
    x = 552.22

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.