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Finding the Fourth Proportional to 426.67, 636.45 and 377.46

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Solution

The fourth proportional to 426.67, 636.45 and 377.46 is: 563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.67 : 636.45 = 377.46 : x
  2. Step 2: Convert to fraction form
    426.67/636.45 = 377.46/x
  3. Step 3: Cross multiply
    426.67x = 636.45 × 377.46
  4. Step 4: Simplify right side
    426.67x = 240,233.00
  5. Step 5: Solve for x
    x = 240,233.00/426.67
  6. Step 6: Final answer
    x = 563.04

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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.