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Finding the Fourth Proportional to 264.64, 364.88 and 161.12

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Solution

The fourth proportional to 264.64, 364.88 and 161.12 is: 222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.64 : 364.88 = 161.12 : x
  2. Step 2: Convert to fraction form
    264.64/364.88 = 161.12/x
  3. Step 3: Cross multiply
    264.64x = 364.88 × 161.12
  4. Step 4: Simplify right side
    264.64x = 58,789.47
  5. Step 5: Solve for x
    x = 58,789.47/264.64
  6. Step 6: Final answer
    x = 222.15

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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.