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Finding the Third Proportional to 469.88 and 635.06

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Solution

The third proportional to 469.88 and 635.06 is: 858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.88 : 635.06 = 635.06 : x
  2. Step 2: Convert to fraction form
    469.88/635.06 = 635.06/x
  3. Step 3: Cross multiply
    469.88x = 635.06 × 635.06
  4. Step 4: Simplify right side
    469.88x = 403,304.38
  5. Step 5: Solve for x
    x = 403,304.38/469.88
  6. Step 6: Final answer
    x = 858.32

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.