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Finding the Fourth Proportional to 306.79, 423.26 and 232.94

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Solution

The fourth proportional to 306.79, 423.26 and 232.94 is: 321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.79 : 423.26 = 232.94 : x
  2. Step 2: Convert to fraction form
    306.79/423.26 = 232.94/x
  3. Step 3: Cross multiply
    306.79x = 423.26 × 232.94
  4. Step 4: Simplify right side
    306.79x = 98,594.95
  5. Step 5: Solve for x
    x = 98,594.95/306.79
  6. Step 6: Final answer
    x = 321.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.