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Finding the Fourth Proportional to 295.38, 406.68 and 286.06

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Solution

The fourth proportional to 295.38, 406.68 and 286.06 is: 393.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.38 : 406.68 = 286.06 : x
  2. Step 2: Convert to fraction form
    295.38/406.68 = 286.06/x
  3. Step 3: Cross multiply
    295.38x = 406.68 × 286.06
  4. Step 4: Simplify right side
    295.38x = 116,334.88
  5. Step 5: Solve for x
    x = 116,334.88/295.38
  6. Step 6: Final answer
    x = 393.85

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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.