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Finding the Fourth Proportional to 192.52, 287.24 and 186.64

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Solution

The fourth proportional to 192.52, 287.24 and 186.64 is: 278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.52 : 287.24 = 186.64 : x
  2. Step 2: Convert to fraction form
    192.52/287.24 = 186.64/x
  3. Step 3: Cross multiply
    192.52x = 287.24 × 186.64
  4. Step 4: Simplify right side
    192.52x = 53,610.47
  5. Step 5: Solve for x
    x = 53,610.47/192.52
  6. Step 6: Final answer
    x = 278.47

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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.