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Finding the Fourth Proportional to 294.25, 441.18 and 140.20

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Solution

The fourth proportional to 294.25, 441.18 and 140.20 is: 210.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.25 : 441.18 = 140.20 : x
  2. Step 2: Convert to fraction form
    294.25/441.18 = 140.20/x
  3. Step 3: Cross multiply
    294.25x = 441.18 × 140.20
  4. Step 4: Simplify right side
    294.25x = 61,853.44
  5. Step 5: Solve for x
    x = 61,853.44/294.25
  6. Step 6: Final answer
    x = 210.21

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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.