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Finding the Fourth Proportional to 461.21, 636.51 and 264.79

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Solution

The fourth proportional to 461.21, 636.51 and 264.79 is: 365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.21 : 636.51 = 264.79 : x
  2. Step 2: Convert to fraction form
    461.21/636.51 = 264.79/x
  3. Step 3: Cross multiply
    461.21x = 636.51 × 264.79
  4. Step 4: Simplify right side
    461.21x = 168,536.98
  5. Step 5: Solve for x
    x = 168,536.98/461.21
  6. Step 6: Final answer
    x = 365.42

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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.