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Finding the Fourth Proportional to 424.55, 636.82 and 136.01

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Solution

The fourth proportional to 424.55, 636.82 and 136.01 is: 204.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.55 : 636.82 = 136.01 : x
  2. Step 2: Convert to fraction form
    424.55/636.82 = 136.01/x
  3. Step 3: Cross multiply
    424.55x = 636.82 × 136.01
  4. Step 4: Simplify right side
    424.55x = 86,610.36
  5. Step 5: Solve for x
    x = 86,610.36/424.55
  6. Step 6: Final answer
    x = 204.01

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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.