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Finding the Fourth Proportional to 461.16, 635.58 and 321.48

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Solution

The fourth proportional to 461.16, 635.58 and 321.48 is: 443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.16 : 635.58 = 321.48 : x
  2. Step 2: Convert to fraction form
    461.16/635.58 = 321.48/x
  3. Step 3: Cross multiply
    461.16x = 635.58 × 321.48
  4. Step 4: Simplify right side
    461.16x = 204,326.26
  5. Step 5: Solve for x
    x = 204,326.26/461.16
  6. Step 6: Final answer
    x = 443.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.