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Finding the Fourth Proportional to 461.29, 636.53 and 284.22

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Solution

The fourth proportional to 461.29, 636.53 and 284.22 is: 392.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.29 : 636.53 = 284.22 : x
  2. Step 2: Convert to fraction form
    461.29/636.53 = 284.22/x
  3. Step 3: Cross multiply
    461.29x = 636.53 × 284.22
  4. Step 4: Simplify right side
    461.29x = 180,914.56
  5. Step 5: Solve for x
    x = 180,914.56/461.29
  6. Step 6: Final answer
    x = 392.19

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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.