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Finding the Fourth Proportional to 192.59, 287.28 and 171.18

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Solution

The fourth proportional to 192.59, 287.28 and 171.18 is: 255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.59 : 287.28 = 171.18 : x
  2. Step 2: Convert to fraction form
    192.59/287.28 = 171.18/x
  3. Step 3: Cross multiply
    192.59x = 287.28 × 171.18
  4. Step 4: Simplify right side
    192.59x = 49,176.59
  5. Step 5: Solve for x
    x = 49,176.59/192.59
  6. Step 6: Final answer
    x = 255.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.