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Finding the Fourth Proportional to 393.84, 543.29 and 246.44

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Solution

The fourth proportional to 393.84, 543.29 and 246.44 is: 339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.84 : 543.29 = 246.44 : x
  2. Step 2: Convert to fraction form
    393.84/543.29 = 246.44/x
  3. Step 3: Cross multiply
    393.84x = 543.29 × 246.44
  4. Step 4: Simplify right side
    393.84x = 133,888.51
  5. Step 5: Solve for x
    x = 133,888.51/393.84
  6. Step 6: Final answer
    x = 339.96

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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.