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Finding the Fourth Proportional to 343.34, 472.61 and 299.60

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Solution

The fourth proportional to 343.34, 472.61 and 299.60 is: 412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.34 : 472.61 = 299.60 : x
  2. Step 2: Convert to fraction form
    343.34/472.61 = 299.60/x
  3. Step 3: Cross multiply
    343.34x = 472.61 × 299.60
  4. Step 4: Simplify right side
    343.34x = 141,593.96
  5. Step 5: Solve for x
    x = 141,593.96/343.34
  6. Step 6: Final answer
    x = 412.40

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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.