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Finding the Third Proportional to 290.25 and 466.50

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Solution

The third proportional to 290.25 and 466.50 is: 749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.25 : 466.50 = 466.50 : x
  2. Step 2: Convert to fraction form
    290.25/466.50 = 466.50/x
  3. Step 3: Cross multiply
    290.25x = 466.50 × 466.50
  4. Step 4: Simplify right side
    290.25x = 217,622.25
  5. Step 5: Solve for x
    x = 217,622.25/290.25
  6. Step 6: Final answer
    x = 749.78

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.