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Finding the Third Proportional to 190.90 and 291.52

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Solution

The third proportional to 190.90 and 291.52 is: 445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.90 : 291.52 = 291.52 : x
  2. Step 2: Convert to fraction form
    190.90/291.52 = 291.52/x
  3. Step 3: Cross multiply
    190.90x = 291.52 × 291.52
  4. Step 4: Simplify right side
    190.90x = 84,981.36
  5. Step 5: Solve for x
    x = 84,981.36/190.90
  6. Step 6: Final answer
    x = 445.17

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.