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Finding the Third Proportional to 282.38 and 427.50

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Solution

The third proportional to 282.38 and 427.50 is: 647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.38 : 427.50 = 427.50 : x
  2. Step 2: Convert to fraction form
    282.38/427.50 = 427.50/x
  3. Step 3: Cross multiply
    282.38x = 427.50 × 427.50
  4. Step 4: Simplify right side
    282.38x = 182,756.25
  5. Step 5: Solve for x
    x = 182,756.25/282.38
  6. Step 6: Final answer
    x = 647.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.