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Finding the Fourth Proportional to 192.23, 287.01 and 157.90

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Solution

The fourth proportional to 192.23, 287.01 and 157.90 is: 235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.23 : 287.01 = 157.90 : x
  2. Step 2: Convert to fraction form
    192.23/287.01 = 157.90/x
  3. Step 3: Cross multiply
    192.23x = 287.01 × 157.90
  4. Step 4: Simplify right side
    192.23x = 45,318.88
  5. Step 5: Solve for x
    x = 45,318.88/192.23
  6. Step 6: Final answer
    x = 235.75

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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.