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Finding the Fourth Proportional to 306.99, 423.32 and 240.48

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Solution

The fourth proportional to 306.99, 423.32 and 240.48 is: 331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.99 : 423.32 = 240.48 : x
  2. Step 2: Convert to fraction form
    306.99/423.32 = 240.48/x
  3. Step 3: Cross multiply
    306.99x = 423.32 × 240.48
  4. Step 4: Simplify right side
    306.99x = 101,799.99
  5. Step 5: Solve for x
    x = 101,799.99/306.99
  6. Step 6: Final answer
    x = 331.61

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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.