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Finding the Fourth Proportional to 635.96, 952.68 and 430.64

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Solution

The fourth proportional to 635.96, 952.68 and 430.64 is: 645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.96 : 952.68 = 430.64 : x
  2. Step 2: Convert to fraction form
    635.96/952.68 = 430.64/x
  3. Step 3: Cross multiply
    635.96x = 952.68 × 430.64
  4. Step 4: Simplify right side
    635.96x = 410,262.12
  5. Step 5: Solve for x
    x = 410,262.12/635.96
  6. Step 6: Final answer
    x = 645.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.