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Finding the Third Proportional to 454 and 490.50

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Solution

The third proportional to 454 and 490.50 is: 529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    454 : 490.50 = 490.50 : x
  2. Step 2: Convert to fraction form
    454/490.50 = 490.50/x
  3. Step 3: Cross multiply
    454x = 490.50 × 490.50
  4. Step 4: Simplify right side
    454x = 240,590.25
  5. Step 5: Solve for x
    x = 240,590.25/454
  6. Step 6: Final answer
    x = 529.93

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These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.