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Finding the Fourth Proportional to 541.18, 809.64 and 342.84

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Solution

The fourth proportional to 541.18, 809.64 and 342.84 is: 512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.18 : 809.64 = 342.84 : x
  2. Step 2: Convert to fraction form
    541.18/809.64 = 342.84/x
  3. Step 3: Cross multiply
    541.18x = 809.64 × 342.84
  4. Step 4: Simplify right side
    541.18x = 277,576.98
  5. Step 5: Solve for x
    x = 277,576.98/541.18
  6. Step 6: Final answer
    x = 512.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.