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Finding the Fourth Proportional to 192.18, 287.90 and 151.32

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Solution

The fourth proportional to 192.18, 287.90 and 151.32 is: 226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.18 : 287.90 = 151.32 : x
  2. Step 2: Convert to fraction form
    192.18/287.90 = 151.32/x
  3. Step 3: Cross multiply
    192.18x = 287.90 × 151.32
  4. Step 4: Simplify right side
    192.18x = 43,565.03
  5. Step 5: Solve for x
    x = 43,565.03/192.18
  6. Step 6: Final answer
    x = 226.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.