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Finding the Fourth Proportional to 294.67, 439.79 and 255.93

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Solution

The fourth proportional to 294.67, 439.79 and 255.93 is: 381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.67 : 439.79 = 255.93 : x
  2. Step 2: Convert to fraction form
    294.67/439.79 = 255.93/x
  3. Step 3: Cross multiply
    294.67x = 439.79 × 255.93
  4. Step 4: Simplify right side
    294.67x = 112,555.45
  5. Step 5: Solve for x
    x = 112,555.45/294.67
  6. Step 6: Final answer
    x = 381.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.