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Finding the Fourth Proportional to 547.79, 755.95 and 299.11

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Solution

The fourth proportional to 547.79, 755.95 and 299.11 is: 412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.79 : 755.95 = 299.11 : x
  2. Step 2: Convert to fraction form
    547.79/755.95 = 299.11/x
  3. Step 3: Cross multiply
    547.79x = 755.95 × 299.11
  4. Step 4: Simplify right side
    547.79x = 226,108.36
  5. Step 5: Solve for x
    x = 226,108.36/547.79
  6. Step 6: Final answer
    x = 412.77

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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.