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Finding the Fourth Proportional to 294.51, 441.78 and 111.87

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Solution

The fourth proportional to 294.51, 441.78 and 111.87 is: 167.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.51 : 441.78 = 111.87 : x
  2. Step 2: Convert to fraction form
    294.51/441.78 = 111.87/x
  3. Step 3: Cross multiply
    294.51x = 441.78 × 111.87
  4. Step 4: Simplify right side
    294.51x = 49,421.93
  5. Step 5: Solve for x
    x = 49,421.93/294.51
  6. Step 6: Final answer
    x = 167.81

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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.