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Finding the Fourth Proportional to 635.38, 953.25 and 392.20

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Solution

The fourth proportional to 635.38, 953.25 and 392.20 is: 588.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.38 : 953.25 = 392.20 : x
  2. Step 2: Convert to fraction form
    635.38/953.25 = 392.20/x
  3. Step 3: Cross multiply
    635.38x = 953.25 × 392.20
  4. Step 4: Simplify right side
    635.38x = 373,864.65
  5. Step 5: Solve for x
    x = 373,864.65/635.38
  6. Step 6: Final answer
    x = 588.41

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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.