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Finding the Fourth Proportional to 343.79, 474.19 and 233.09

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Solution

The fourth proportional to 343.79, 474.19 and 233.09 is: 321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.79 : 474.19 = 233.09 : x
  2. Step 2: Convert to fraction form
    343.79/474.19 = 233.09/x
  3. Step 3: Cross multiply
    343.79x = 474.19 × 233.09
  4. Step 4: Simplify right side
    343.79x = 110,527.77
  5. Step 5: Solve for x
    x = 110,527.77/343.79
  6. Step 6: Final answer
    x = 321.50

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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.