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Finding the Fourth Proportional to 286.85, 395.84 and 176.29

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Solution

The fourth proportional to 286.85, 395.84 and 176.29 is: 243.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.85 : 395.84 = 176.29 : x
  2. Step 2: Convert to fraction form
    286.85/395.84 = 176.29/x
  3. Step 3: Cross multiply
    286.85x = 395.84 × 176.29
  4. Step 4: Simplify right side
    286.85x = 69,782.08
  5. Step 5: Solve for x
    x = 69,782.08/286.85
  6. Step 6: Final answer
    x = 243.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.