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Finding the Fourth Proportional to 192.60, 287.58 and 153.66

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Solution

The fourth proportional to 192.60, 287.58 and 153.66 is: 229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.60 : 287.58 = 153.66 : x
  2. Step 2: Convert to fraction form
    192.60/287.58 = 153.66/x
  3. Step 3: Cross multiply
    192.60x = 287.58 × 153.66
  4. Step 4: Simplify right side
    192.60x = 44,189.54
  5. Step 5: Solve for x
    x = 44,189.54/192.60
  6. Step 6: Final answer
    x = 229.44

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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.