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Finding the Third Proportional to 290 and 384

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Solution

The third proportional to 290 and 384 is: 508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290 : 384 = 384 : x
  2. Step 2: Convert to fraction form
    290/384 = 384/x
  3. Step 3: Cross multiply
    290x = 384 × 384
  4. Step 4: Simplify right side
    290x = 147,456
  5. Step 5: Solve for x
    x = 147,456/290
  6. Step 6: Final answer
    x = 508.47

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These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.