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Finding the Fourth Proportional to 423.05, 634.04 and 367.98

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Solution

The fourth proportional to 423.05, 634.04 and 367.98 is: 551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.05 : 634.04 = 367.98 : x
  2. Step 2: Convert to fraction form
    423.05/634.04 = 367.98/x
  3. Step 3: Cross multiply
    423.05x = 634.04 × 367.98
  4. Step 4: Simplify right side
    423.05x = 233,314.39
  5. Step 5: Solve for x
    x = 233,314.39/423.05
  6. Step 6: Final answer
    x = 551.50

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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.