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Finding the Fourth Proportional to 393.03, 541.17 and 343.62

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Solution

The fourth proportional to 393.03, 541.17 and 343.62 is: 473.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.03 : 541.17 = 343.62 : x
  2. Step 2: Convert to fraction form
    393.03/541.17 = 343.62/x
  3. Step 3: Cross multiply
    393.03x = 541.17 × 343.62
  4. Step 4: Simplify right side
    393.03x = 185,956.84
  5. Step 5: Solve for x
    x = 185,956.84/393.03
  6. Step 6: Final answer
    x = 473.14

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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.