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Finding the Fourth Proportional to 167.04, 230.28 and 128.16

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Solution

The fourth proportional to 167.04, 230.28 and 128.16 is: 176.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.04 : 230.28 = 128.16 : x
  2. Step 2: Convert to fraction form
    167.04/230.28 = 128.16/x
  3. Step 3: Cross multiply
    167.04x = 230.28 × 128.16
  4. Step 4: Simplify right side
    167.04x = 29,512.68
  5. Step 5: Solve for x
    x = 29,512.68/167.04
  6. Step 6: Final answer
    x = 176.68

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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.