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Finding the Third Proportional to 478 and 604

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Solution

The third proportional to 478 and 604 is: 763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478 : 604 = 604 : x
  2. Step 2: Convert to fraction form
    478/604 = 604/x
  3. Step 3: Cross multiply
    478x = 604 × 604
  4. Step 4: Simplify right side
    478x = 364,816
  5. Step 5: Solve for x
    x = 364,816/478
  6. Step 6: Final answer
    x = 763.21

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These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.