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Finding the Fourth Proportional to 403.76, 606.29 and 250.66

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Solution

The fourth proportional to 403.76, 606.29 and 250.66 is: 376.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.76 : 606.29 = 250.66 : x
  2. Step 2: Convert to fraction form
    403.76/606.29 = 250.66/x
  3. Step 3: Cross multiply
    403.76x = 606.29 × 250.66
  4. Step 4: Simplify right side
    403.76x = 151,972.65
  5. Step 5: Solve for x
    x = 151,972.65/403.76
  6. Step 6: Final answer
    x = 376.39

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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.