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Finding the Fourth Proportional to 294.78, 441.80 and 140.77

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Solution

The fourth proportional to 294.78, 441.80 and 140.77 is: 210.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.78 : 441.80 = 140.77 : x
  2. Step 2: Convert to fraction form
    294.78/441.80 = 140.77/x
  3. Step 3: Cross multiply
    294.78x = 441.80 × 140.77
  4. Step 4: Simplify right side
    294.78x = 62,189.27
  5. Step 5: Solve for x
    x = 62,189.27/294.78
  6. Step 6: Final answer
    x = 210.97

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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.