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Finding the Fourth Proportional to 228.25, 314.78 and 166.22

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Solution

The fourth proportional to 228.25, 314.78 and 166.22 is: 229.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.25 : 314.78 = 166.22 : x
  2. Step 2: Convert to fraction form
    228.25/314.78 = 166.22/x
  3. Step 3: Cross multiply
    228.25x = 314.78 × 166.22
  4. Step 4: Simplify right side
    228.25x = 52,321.90
  5. Step 5: Solve for x
    x = 52,321.90/228.25
  6. Step 6: Final answer
    x = 229.24

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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.