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Finding the Fourth Proportional to 426.27, 636.30 and 365.79

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Solution

The fourth proportional to 426.27, 636.30 and 365.79 is: 546.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.27 : 636.30 = 365.79 : x
  2. Step 2: Convert to fraction form
    426.27/636.30 = 365.79/x
  3. Step 3: Cross multiply
    426.27x = 636.30 × 365.79
  4. Step 4: Simplify right side
    426.27x = 232,750.35
  5. Step 5: Solve for x
    x = 232,750.35/426.27
  6. Step 6: Final answer
    x = 546.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.