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Finding the Fourth Proportional to 294.88, 441.06 and 212.80

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Solution

The fourth proportional to 294.88, 441.06 and 212.80 is: 318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.88 : 441.06 = 212.80 : x
  2. Step 2: Convert to fraction form
    294.88/441.06 = 212.80/x
  3. Step 3: Cross multiply
    294.88x = 441.06 × 212.80
  4. Step 4: Simplify right side
    294.88x = 93,857.57
  5. Step 5: Solve for x
    x = 93,857.57/294.88
  6. Step 6: Final answer
    x = 318.29

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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.