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Finding the Third Proportional to 473.44 and 607.78

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Solution

The third proportional to 473.44 and 607.78 is: 780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.44 : 607.78 = 607.78 : x
  2. Step 2: Convert to fraction form
    473.44/607.78 = 607.78/x
  3. Step 3: Cross multiply
    473.44x = 607.78 × 607.78
  4. Step 4: Simplify right side
    473.44x = 369,398.05
  5. Step 5: Solve for x
    x = 369,398.05/473.44
  6. Step 6: Final answer
    x = 780.25

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.